somardois númerosby @Sara Soares Carreira0⋯ ForkExport SVG PNG DOT id_faf1ab82_8182_4771_8066_d64c272c77d8 Begin id_b83c2ac9_75fd_4d0c_a90b_49bbb3676c96 a id_faf1ab82_8182_4771_8066_d64c272c77d8:s->id_b83c2ac9_75fd_4d0c_a90b_49bbb3676c96:n id_da559921_5608_4d10_82ad_b4d03bc6f173 b id_b83c2ac9_75fd_4d0c_a90b_49bbb3676c96:s->id_da559921_5608_4d10_82ad_b4d03bc6f173:n id_9a0ce01d_70b7_4657_9d6e_cd47dd2f0627 soma id_da559921_5608_4d10_82ad_b4d03bc6f173:s->id_9a0ce01d_70b7_4657_9d6e_cd47dd2f0627:n id_0c20ed1a_4235_4d61_aec5_87db1d77d34a a id_9a0ce01d_70b7_4657_9d6e_cd47dd2f0627:s->id_0c20ed1a_4235_4d61_aec5_87db1d77d34a:n id_9599cd6f_f297_4ae2_9552_85f85fceb521 b id_0c20ed1a_4235_4d61_aec5_87db1d77d34a:s->id_9599cd6f_f297_4ae2_9552_85f85fceb521:n id_9cc916ea_1db1_4cff_a31b_3c8c00aea05a soma = a+b id_9599cd6f_f297_4ae2_9552_85f85fceb521:s->id_9cc916ea_1db1_4cff_a31b_3c8c00aea05a:n id_d60030c6_c4a2_4f0e_b762_ba52179fa773 soma id_9cc916ea_1db1_4cff_a31b_3c8c00aea05a:s->id_d60030c6_c4a2_4f0e_b762_ba52179fa773:n id_f3a2eccb_ce93_47ed_ad89_857dd38c255b End id_d60030c6_c4a2_4f0e_b762_ba52179fa773:s->id_f3a2eccb_ce93_47ed_ad89_857dd38c255b:n
New Programby @João Cardoso Agostinho0⋯ ForkExport SVG PNG DOT id_c439576d_5cf4_4f5d_b2f7_6754c8757588 Begin id_9835761c_42ce_4fa6_ad79_b1c5b9a4867b a id_c439576d_5cf4_4f5d_b2f7_6754c8757588:s->id_9835761c_42ce_4fa6_ad79_b1c5b9a4867b:n id_ca74e4a6_949f_41a9_9b81_5d7dabccf50b b id_9835761c_42ce_4fa6_ad79_b1c5b9a4867b:s->id_ca74e4a6_949f_41a9_9b81_5d7dabccf50b:n id_7653f632_62e4_453b_ab09_b85eefda4b73 preco id_ca74e4a6_949f_41a9_9b81_5d7dabccf50b:s->id_7653f632_62e4_453b_ab09_b85eefda4b73:n id_99310944_b05c_48e1_96c2_b00958b28cad a = 100 id_7653f632_62e4_453b_ab09_b85eefda4b73:s->id_99310944_b05c_48e1_96c2_b00958b28cad:n id_ab87722e_17a8_4fbc_87ac_7f2254766205 b = 23 id_99310944_b05c_48e1_96c2_b00958b28cad:s->id_ab87722e_17a8_4fbc_87ac_7f2254766205:n id_4b924ece_8df4_46fd_9a5a_65df96f31f6f preco = a*(1+b/100) id_ab87722e_17a8_4fbc_87ac_7f2254766205:s->id_4b924ece_8df4_46fd_9a5a_65df96f31f6f:n id_ad424500_b348_4597_b380_cac361f3d169 "o preço é "+preco "euros" id_4b924ece_8df4_46fd_9a5a_65df96f31f6f:s->id_ad424500_b348_4597_b380_cac361f3d169:n id_3fcf239e_b5b9_49c7_b554_18e4622354cb End id_ad424500_b348_4597_b380_cac361f3d169:s->id_3fcf239e_b5b9_49c7_b554_18e4622354cb:n
exemplo guiadoby @Gabriela Grazina Grilo0⋯ ForkExport SVG PNG DOT id_1598805c_2934_475a_8d0a_3df55eeb0f62 Begin id_739bd6d1_e8e6_45b1_8c26_7acc0c7f4fee a id_1598805c_2934_475a_8d0a_3df55eeb0f62:s->id_739bd6d1_e8e6_45b1_8c26_7acc0c7f4fee:n id_a39c0a43_cd4e_4417_a4b1_d5086dc9c13e b id_739bd6d1_e8e6_45b1_8c26_7acc0c7f4fee:s->id_a39c0a43_cd4e_4417_a4b1_d5086dc9c13e:n id_4d787aa0_78dd_4119_b2cc_ca92621f60cb soma id_a39c0a43_cd4e_4417_a4b1_d5086dc9c13e:s->id_4d787aa0_78dd_4119_b2cc_ca92621f60cb:n id_77eb325e_aafd_4b94_b07c_0e5051f73add a id_4d787aa0_78dd_4119_b2cc_ca92621f60cb:s->id_77eb325e_aafd_4b94_b07c_0e5051f73add:n id_3af532ff_3a17_413e_b08a_fc46a22719bb b id_77eb325e_aafd_4b94_b07c_0e5051f73add:s->id_3af532ff_3a17_413e_b08a_fc46a22719bb:n id_92dd96ab_81b3_42c7_a6c6_a2474b4eb5e6 soma = a+b id_3af532ff_3a17_413e_b08a_fc46a22719bb:s->id_92dd96ab_81b3_42c7_a6c6_a2474b4eb5e6:n id_5e49a6c2_e73b_4eeb_b27c_c1b4cec34665 soma id_92dd96ab_81b3_42c7_a6c6_a2474b4eb5e6:s->id_5e49a6c2_e73b_4eeb_b27c_c1b4cec34665:n id_4187d7ab_ac3b_4c51_9890_67a435623c42 End id_5e49a6c2_e73b_4eeb_b27c_c1b4cec34665:s->id_4187d7ab_ac3b_4c51_9890_67a435623c42:n
acrescentar 2 unidadeby @Victória Silva Santos0⋯ ForkExport SVG PNG DOT id_1ec8d174_e5c0_4b46_8b5a_3d4fc8dd5534 Begin id_3dd13528_d347_41d2_b602_872daeb333d6 a id_1ec8d174_e5c0_4b46_8b5a_3d4fc8dd5534:s->id_3dd13528_d347_41d2_b602_872daeb333d6:n id_79da3121_1ddf_47ee_b37e_20a33f545609 b id_3dd13528_d347_41d2_b602_872daeb333d6:s->id_79da3121_1ddf_47ee_b37e_20a33f545609:n id_f22841c3_9283_425d_b096_70b927ba35e2 a id_79da3121_1ddf_47ee_b37e_20a33f545609:s->id_f22841c3_9283_425d_b096_70b927ba35e2:n id_8fa30728_7c4d_476f_ae7d_afec5f4f26fb b = a+2 id_f22841c3_9283_425d_b096_70b927ba35e2:s->id_8fa30728_7c4d_476f_ae7d_afec5f4f26fb:n id_21096cff_0e15_4fa8_97f3_8fb162f3ef94 "o resultado é "+b id_8fa30728_7c4d_476f_ae7d_afec5f4f26fb:s->id_21096cff_0e15_4fa8_97f3_8fb162f3ef94:n id_d744e16d_ec49_4a78_b20e_37eae16ef750 End id_21096cff_0e15_4fa8_97f3_8fb162f3ef94:s->id_d744e16d_ec49_4a78_b20e_37eae16ef750:n
somar_dois_numerosby @Duarte da Silva Pedrosa0⋯ ForkExport SVG PNG DOT id_63cdc1ec_e8df_49ea_9fc0_90a7f4eeea00 Begin id_d8872dc6_4272_4d30_ad6e_7e26f4bf9094 a id_63cdc1ec_e8df_49ea_9fc0_90a7f4eeea00:s->id_d8872dc6_4272_4d30_ad6e_7e26f4bf9094:n id_3fd2bf4a_5c9f_45d8_a863_9e7e97e4d87c b id_d8872dc6_4272_4d30_ad6e_7e26f4bf9094:s->id_3fd2bf4a_5c9f_45d8_a863_9e7e97e4d87c:n id_386b0530_a146_4c21_91d4_6f17444823a0 soma id_3fd2bf4a_5c9f_45d8_a863_9e7e97e4d87c:s->id_386b0530_a146_4c21_91d4_6f17444823a0:n id_e8e4b063_bc98_42ef_ba57_f64536d344a7 a id_386b0530_a146_4c21_91d4_6f17444823a0:s->id_e8e4b063_bc98_42ef_ba57_f64536d344a7:n id_d8f7f5cd_977b_49e6_8306_8aaa0bd7ee10 b id_e8e4b063_bc98_42ef_ba57_f64536d344a7:s->id_d8f7f5cd_977b_49e6_8306_8aaa0bd7ee10:n id_dfe36d35_0a8d_45d4_85bd_8db13310b56e soma = a+b id_d8f7f5cd_977b_49e6_8306_8aaa0bd7ee10:s->id_dfe36d35_0a8d_45d4_85bd_8db13310b56e:n id_49d06444_1cb6_4a93_b147_0115758ad9ef "A soma é igual " +soma id_dfe36d35_0a8d_45d4_85bd_8db13310b56e:s->id_49d06444_1cb6_4a93_b147_0115758ad9ef:n id_914fe237_82b2_4d97_99f6_ecc6533f6f3f End id_49d06444_1cb6_4a93_b147_0115758ad9ef:s->id_914fe237_82b2_4d97_99f6_ecc6533f6f3f:n
New Programby @Eliza Ponedilok0⋯ ForkExport SVG PNG DOT id_2d537eac_84e8_4f1f_a331_cf2ed1c425b2 Begin id_5b94976b_9606_40c8_97b8_86ce226a059e a id_2d537eac_84e8_4f1f_a331_cf2ed1c425b2:s->id_5b94976b_9606_40c8_97b8_86ce226a059e:n id_3e022103_57bc_40f3_abfa_eedfadc57d1e b id_5b94976b_9606_40c8_97b8_86ce226a059e:s->id_3e022103_57bc_40f3_abfa_eedfadc57d1e:n id_871d557f_8636_45d1_9c3c_2e7defb03013 multiplicar id_3e022103_57bc_40f3_abfa_eedfadc57d1e:s->id_871d557f_8636_45d1_9c3c_2e7defb03013:n id_b3d53067_e886_4917_ba86_81ea1a7eef2e a id_871d557f_8636_45d1_9c3c_2e7defb03013:s->id_b3d53067_e886_4917_ba86_81ea1a7eef2e:n id_884a799a_e6ff_4f2c_9fcf_617506ec1292 b id_b3d53067_e886_4917_ba86_81ea1a7eef2e:s->id_884a799a_e6ff_4f2c_9fcf_617506ec1292:n id_70f56c39_4fd8_4a41_bec6_4cb5f6e3559e multiplicar = a*b id_884a799a_e6ff_4f2c_9fcf_617506ec1292:s->id_70f56c39_4fd8_4a41_bec6_4cb5f6e3559e:n id_c234d8c8_d440_4bdc_9d68_f69ece2d410d "o resultado e: "+multiplicar id_70f56c39_4fd8_4a41_bec6_4cb5f6e3559e:s->id_c234d8c8_d440_4bdc_9d68_f69ece2d410d:n id_6426b968_23bd_4e13_a6ca_da906691f6b2 End id_c234d8c8_d440_4bdc_9d68_f69ece2d410d:s->id_6426b968_23bd_4e13_a6ca_da906691f6b2:n
New Programby @Eliza Ponedilok0⋯ ForkExport SVG PNG DOT id_004f3f19_0fb7_4ac2_bba9_0226134c614f Begin id_8a2938cd_b921_4c23_b02e_7f70735a0747 a id_004f3f19_0fb7_4ac2_bba9_0226134c614f:s->id_8a2938cd_b921_4c23_b02e_7f70735a0747:n id_f8d77c75_e104_424d_bfaa_f20d168988e6 b id_8a2938cd_b921_4c23_b02e_7f70735a0747:s->id_f8d77c75_e104_424d_bfaa_f20d168988e6:n id_946ea5b2_06b2_4e43_87f9_0c312e2b7413 soma id_f8d77c75_e104_424d_bfaa_f20d168988e6:s->id_946ea5b2_06b2_4e43_87f9_0c312e2b7413:n id_b70e2e75_59f5_45ca_8e1b_bfdc7c2fb9e5 b id_946ea5b2_06b2_4e43_87f9_0c312e2b7413:s->id_b70e2e75_59f5_45ca_8e1b_bfdc7c2fb9e5:n id_9264e896_9c83_44b7_8afb_a68ecf6c6fd1 a id_b70e2e75_59f5_45ca_8e1b_bfdc7c2fb9e5:s->id_9264e896_9c83_44b7_8afb_a68ecf6c6fd1:n id_351b2187_3020_4d92_b18e_dffbaf2b702b soma = a+b id_9264e896_9c83_44b7_8afb_a68ecf6c6fd1:s->id_351b2187_3020_4d92_b18e_dffbaf2b702b:n id_5060e5ff_c8bd_46a3_a709_ad2665e86671 "o resultado final e: "+soma id_351b2187_3020_4d92_b18e_dffbaf2b702b:s->id_5060e5ff_c8bd_46a3_a709_ad2665e86671:n id_307d563d_3d89_40cb_b4ad_e5eafe93596e End id_5060e5ff_c8bd_46a3_a709_ad2665e86671:s->id_307d563d_3d89_40cb_b4ad_e5eafe93596e:n
New Programby @Afonso Marques Pedrosa0⋯ ForkExport SVG PNG DOT id_d22cbc66_974c_4ff8_882d_09fabb476dea Begin id_d348bbc1_f0c8_4bac_a35b_cc2fc568f03c a id_d22cbc66_974c_4ff8_882d_09fabb476dea:s->id_d348bbc1_f0c8_4bac_a35b_cc2fc568f03c:n id_28aa80fa_b937_48fc_ab5b_bed8fb28cc59 b id_d348bbc1_f0c8_4bac_a35b_cc2fc568f03c:s->id_28aa80fa_b937_48fc_ab5b_bed8fb28cc59:n id_d8feca79_72b3_4eb4_8f47_51285d13dd7d multiplicacao id_28aa80fa_b937_48fc_ab5b_bed8fb28cc59:s->id_d8feca79_72b3_4eb4_8f47_51285d13dd7d:n id_aec59644_89e4_4bee_acbb_29790698bea4 a id_d8feca79_72b3_4eb4_8f47_51285d13dd7d:s->id_aec59644_89e4_4bee_acbb_29790698bea4:n id_deae8512_f0d6_45be_bf12_2b5546a6f5b8 b id_aec59644_89e4_4bee_acbb_29790698bea4:s->id_deae8512_f0d6_45be_bf12_2b5546a6f5b8:n id_adf7baf0_6836_4fd3_a704_73bb910d3c43 multiplicacao = a*b id_deae8512_f0d6_45be_bf12_2b5546a6f5b8:s->id_adf7baf0_6836_4fd3_a704_73bb910d3c43:n id_60d94404_11ac_4840_a903_170f8166da1a "o resultado é "+multiplicacao id_adf7baf0_6836_4fd3_a704_73bb910d3c43:s->id_60d94404_11ac_4840_a903_170f8166da1a:n id_feb9a9b7_1a32_44f1_9f14_23e6243c553a End id_60d94404_11ac_4840_a903_170f8166da1a:s->id_feb9a9b7_1a32_44f1_9f14_23e6243c553a:n
multiplicação dois númerosby @Mateus Mendes Alberto0⋯ ForkExport SVG PNG DOT id_3bbf12a2_6d30_4d77_a6ee_de38e26dda70 Begin id_1345403d_f490_4ae0_a127_29e7d5b38b04 a id_3bbf12a2_6d30_4d77_a6ee_de38e26dda70:s->id_1345403d_f490_4ae0_a127_29e7d5b38b04:n id_bf7de242_4af5_44e1_8092_6b039d181a6f b id_1345403d_f490_4ae0_a127_29e7d5b38b04:s->id_bf7de242_4af5_44e1_8092_6b039d181a6f:n id_a81f944c_8234_43ca_aba5_0612b800a426 soma id_bf7de242_4af5_44e1_8092_6b039d181a6f:s->id_a81f944c_8234_43ca_aba5_0612b800a426:n id_8152ffde_1dbf_4c5c_93b8_b09a54a70342 a id_a81f944c_8234_43ca_aba5_0612b800a426:s->id_8152ffde_1dbf_4c5c_93b8_b09a54a70342:n id_3513dfe8_cef7_4a43_9109_79a4028c9390 b id_8152ffde_1dbf_4c5c_93b8_b09a54a70342:s->id_3513dfe8_cef7_4a43_9109_79a4028c9390:n id_2d83af06_5c48_4ea4_a907_fe7859aab201 soma = a+b id_3513dfe8_cef7_4a43_9109_79a4028c9390:s->id_2d83af06_5c48_4ea4_a907_fe7859aab201:n id_046df403_4349_41a8_8b1e_dc98aa53e593 " A soma é igual a " +soma id_2d83af06_5c48_4ea4_a907_fe7859aab201:s->id_046df403_4349_41a8_8b1e_dc98aa53e593:n id_92dc25f3_2d4b_4a03_9670_e0cf9a3bfce0 End id_046df403_4349_41a8_8b1e_dc98aa53e593:s->id_92dc25f3_2d4b_4a03_9670_e0cf9a3bfce0:n
New Programby @apriatun nandasolihah0⋯ ForkExport SVG PNG DOT id_fc99962b_8a9f_44b3_94de_382e0f350047 Begin id_a7a37eaf_7c6b_4f1f_a8de_a00478491782 a = 60 id_fc99962b_8a9f_44b3_94de_382e0f350047:s->id_a7a37eaf_7c6b_4f1f_a8de_a00478491782:n id_1436e15f_829d_4f8a_8119_2f8ad5d93cd0 b = 20 id_a7a37eaf_7c6b_4f1f_a8de_a00478491782:s->id_1436e15f_829d_4f8a_8119_2f8ad5d93cd0:n id_e113fb39_c2ef_4095_9816_54094ae12d9f c = 100 id_1436e15f_829d_4f8a_8119_2f8ad5d93cd0:s->id_e113fb39_c2ef_4095_9816_54094ae12d9f:n id_3d942b9c_2131_432d_a449_cad1d551b7da d = 40 id_e113fb39_c2ef_4095_9816_54094ae12d9f:s->id_3d942b9c_2131_432d_a449_cad1d551b7da:n id_f59da38a_8de6_4142_b583_6ebf2059bc69 max = a id_3d942b9c_2131_432d_a449_cad1d551b7da:s->id_f59da38a_8de6_4142_b583_6ebf2059bc69:n id_0d720c78_64fa_425d_b35d_ddd1cff8c4f8 b > max id_f59da38a_8de6_4142_b583_6ebf2059bc69:s->id_0d720c78_64fa_425d_b35d_ddd1cff8c4f8:n true_dummy_up_id_0d720c78_64fa_425d_b35d_ddd1cff8c4f8 id_0d720c78_64fa_425d_b35d_ddd1cff8c4f8:e->true_dummy_up_id_0d720c78_64fa_425d_b35d_ddd1cff8c4f8 true false_dummy_up_id_0d720c78_64fa_425d_b35d_ddd1cff8c4f8 id_0d720c78_64fa_425d_b35d_ddd1cff8c4f8:w->false_dummy_up_id_0d720c78_64fa_425d_b35d_ddd1cff8c4f8 false id_8c6cbc7d_4e26_43f2_b72e_c0d23300c842 max = b true_dummy_up_id_0d720c78_64fa_425d_b35d_ddd1cff8c4f8->id_8c6cbc7d_4e26_43f2_b72e_c0d23300c842:n false_dummy_down_id_0d720c78_64fa_425d_b35d_ddd1cff8c4f8 false_dummy_up_id_0d720c78_64fa_425d_b35d_ddd1cff8c4f8->false_dummy_down_id_0d720c78_64fa_425d_b35d_ddd1cff8c4f8:n true_dummy_down_id_0d720c78_64fa_425d_b35d_ddd1cff8c4f8 id_8c6cbc7d_4e26_43f2_b72e_c0d23300c842:s->true_dummy_down_id_0d720c78_64fa_425d_b35d_ddd1cff8c4f8:n end_id_0d720c78_64fa_425d_b35d_ddd1cff8c4f8 true_dummy_down_id_0d720c78_64fa_425d_b35d_ddd1cff8c4f8->end_id_0d720c78_64fa_425d_b35d_ddd1cff8c4f8 false_dummy_down_id_0d720c78_64fa_425d_b35d_ddd1cff8c4f8->end_id_0d720c78_64fa_425d_b35d_ddd1cff8c4f8 id_4e408e67_fc81_458e_8820_cb9345b83ff0 c > max end_id_0d720c78_64fa_425d_b35d_ddd1cff8c4f8:s->id_4e408e67_fc81_458e_8820_cb9345b83ff0:n true_dummy_up_id_4e408e67_fc81_458e_8820_cb9345b83ff0 id_4e408e67_fc81_458e_8820_cb9345b83ff0:e->true_dummy_up_id_4e408e67_fc81_458e_8820_cb9345b83ff0 true false_dummy_up_id_4e408e67_fc81_458e_8820_cb9345b83ff0 id_4e408e67_fc81_458e_8820_cb9345b83ff0:w->false_dummy_up_id_4e408e67_fc81_458e_8820_cb9345b83ff0 false id_79d277f7_b159_4e2b_b8c1_9670fe5c7f67 max = c true_dummy_up_id_4e408e67_fc81_458e_8820_cb9345b83ff0->id_79d277f7_b159_4e2b_b8c1_9670fe5c7f67:n false_dummy_down_id_4e408e67_fc81_458e_8820_cb9345b83ff0 false_dummy_up_id_4e408e67_fc81_458e_8820_cb9345b83ff0->false_dummy_down_id_4e408e67_fc81_458e_8820_cb9345b83ff0:n true_dummy_down_id_4e408e67_fc81_458e_8820_cb9345b83ff0 id_79d277f7_b159_4e2b_b8c1_9670fe5c7f67:s->true_dummy_down_id_4e408e67_fc81_458e_8820_cb9345b83ff0:n end_id_4e408e67_fc81_458e_8820_cb9345b83ff0 true_dummy_down_id_4e408e67_fc81_458e_8820_cb9345b83ff0->end_id_4e408e67_fc81_458e_8820_cb9345b83ff0 false_dummy_down_id_4e408e67_fc81_458e_8820_cb9345b83ff0->end_id_4e408e67_fc81_458e_8820_cb9345b83ff0 id_e7093c54_5445_4580_bf1d_060377166bbb d > max end_id_4e408e67_fc81_458e_8820_cb9345b83ff0:s->id_e7093c54_5445_4580_bf1d_060377166bbb:n true_dummy_up_id_e7093c54_5445_4580_bf1d_060377166bbb id_e7093c54_5445_4580_bf1d_060377166bbb:e->true_dummy_up_id_e7093c54_5445_4580_bf1d_060377166bbb true false_dummy_up_id_e7093c54_5445_4580_bf1d_060377166bbb id_e7093c54_5445_4580_bf1d_060377166bbb:w->false_dummy_up_id_e7093c54_5445_4580_bf1d_060377166bbb false id_02350834_a285_45c0_b860_0c18ba0d9c87 max = d true_dummy_up_id_e7093c54_5445_4580_bf1d_060377166bbb->id_02350834_a285_45c0_b860_0c18ba0d9c87:n false_dummy_down_id_e7093c54_5445_4580_bf1d_060377166bbb false_dummy_up_id_e7093c54_5445_4580_bf1d_060377166bbb->false_dummy_down_id_e7093c54_5445_4580_bf1d_060377166bbb:n true_dummy_down_id_e7093c54_5445_4580_bf1d_060377166bbb id_02350834_a285_45c0_b860_0c18ba0d9c87:s->true_dummy_down_id_e7093c54_5445_4580_bf1d_060377166bbb:n end_id_e7093c54_5445_4580_bf1d_060377166bbb true_dummy_down_id_e7093c54_5445_4580_bf1d_060377166bbb->end_id_e7093c54_5445_4580_bf1d_060377166bbb false_dummy_down_id_e7093c54_5445_4580_bf1d_060377166bbb->end_id_e7093c54_5445_4580_bf1d_060377166bbb id_6e495f1f_b854_409e_b42c_394ff8e8453c max end_id_e7093c54_5445_4580_bf1d_060377166bbb:s->id_6e495f1f_b854_409e_b42c_394ff8e8453c:n id_a24f020d_4200_4e65_a382_02bb47115e2b End id_6e495f1f_b854_409e_b42c_394ff8e8453c:s->id_a24f020d_4200_4e65_a382_02bb47115e2b:n