Question Number 189661 by MikeH last updated on 19/Mar/23 Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 189662 by MikeH last updated on 19/Mar/23 Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 189660 by MikeH last updated on 19/Mar/23 Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 189641 by MikeH last updated on 19/Mar/23 $$\mathrm{A}\:\mathrm{man}\:\mathrm{has}\:\mathrm{equal}\:\mathrm{chances}\:\mathrm{of}\:\mathrm{travelling}\:\mathrm{by}\: \\ $$$$\mathrm{air}\left(\mathrm{A}\right),\:\mathrm{bus}\left(\mathrm{B}\right)\:\mathrm{and}\:\mathrm{train}\left(\mathrm{T}\right).\:\mathrm{the}\:\mathrm{probability} \\ $$$$\mathrm{that}\:\mathrm{when}\:\mathrm{he}\:\mathrm{travels}\:\mathrm{by}\:\mathrm{air},\:\mathrm{bus}\:\mathrm{or}\:\mathrm{train}\:\mathrm{he} \\ $$$$\mathrm{will}\:\mathrm{have}\:\mathrm{an}\:\mathrm{accident}\:\mathrm{are}\:\frac{\mathrm{1}}{\mathrm{3}},\:\frac{\mathrm{3}}{\mathrm{5}}\:\mathrm{and}\:\frac{\mathrm{1}}{\mathrm{10}}. \\ $$$$\mathrm{find}\:\mathrm{the}\:\mathrm{probability}\:\mathrm{that}\: \\ $$$$\left(\mathrm{a}\right)\:\mathrm{he}\:\mathrm{travelled}\:\mathrm{and}\:\mathrm{was}\:\mathrm{involved}\:\mathrm{in}\:\mathrm{an}\:\mathrm{accident} \\ $$$$\left(\mathrm{b}\right)\:\mathrm{he}\:\mathrm{was}\:\mathrm{travelling}\:\mathrm{by}\:\mathrm{air}\:\mathrm{given}\:\mathrm{that}\:\mathrm{he}\:\mathrm{was} \\ $$$$\mathrm{involved}\:\mathrm{in}\:\mathrm{an}\:\mathrm{accident}. \\…
Question Number 58253 by pete last updated on 20/Apr/19 $$\mathrm{There}\:\mathrm{are}\:\mathrm{100},\:\mathrm{150}\:\mathrm{and}\:\mathrm{250}\:\mathrm{students}\:\mathrm{in} \\ $$$$\mathrm{forms}\:\mathrm{one},\:\mathrm{two}\:\mathrm{and}\:\mathrm{three},\:\mathrm{respectively} \\ $$$$\mathrm{in}\:\mathrm{a}\:\mathrm{school}.\:\mathrm{If}\:\mathrm{the}\:\mathrm{mean}\:\mathrm{ages}\:\mathrm{of}\:\mathrm{tbe}\:\mathrm{students}\:\mathrm{in} \\ $$$$\mathrm{the}\:\mathrm{forms}\:\mathrm{are}\:\mathrm{15}.\mathrm{6}\:\mathrm{years},\:\mathrm{16}.\mathrm{8}\:\mathrm{years}\:\mathrm{and} \\ $$$$\mathrm{18years}\:\mathrm{respectively},\:\mathrm{find} \\ $$$$\mathrm{i}.\:\mathrm{the}\:\mathrm{total}\:\mathrm{number}\:\mathrm{of}\:\mathrm{students}\:\mathrm{in}\:\mathrm{the}\:\mathrm{forms} \\ $$$$\mathrm{ii}.\:\mathrm{correct}\:\mathrm{to}\:\mathrm{one}\:\mathrm{decimal}\:\mathrm{place},\:\mathrm{the}\:\mathrm{mean} \\ $$$$\mathrm{age}\:\mathrm{of}\:\mathrm{all}\:\mathrm{the}\:\mathrm{students} \\…
Question Number 123771 by benjo_mathlover last updated on 28/Nov/20 Commented by benjo_mathlover last updated on 28/Nov/20 $$\:{let}\:\blacklozenge\:=\:{man}\:,\:\heartsuit={woman} \\ $$$$\:\blacklozenge\heartsuit\blacklozenge\heartsuit\blacklozenge\heartsuit\blacklozenge\heartsuit\blacklozenge\heartsuit\blacklozenge\heartsuit\blacklozenge= \\ $$$$\:\mathrm{3}!\:×{C}_{\mathrm{3}} ^{\mathrm{6}} ×\mathrm{5}!\:×\mathrm{42} \\ $$$${p}\left({A}\right)=\:\frac{\mathrm{3}!×{C}_{\mathrm{3}}…
Question Number 58178 by mamah Fousséni last updated on 19/Apr/19 Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 58051 by Aditya789 last updated on 17/Apr/19 Answered by tanmay last updated on 17/Apr/19 $${sample}\:{space}\left\{{HHH},{HHT},{HTH},{HTT},{THH}\right. \\ $$$$\left.\:\:\:\:\:{THT},{TTH},{TTT}\right\} \\ $$$${favourabe}\:{result}\:{is}\left\{{HT}\bar {{H}},{THT}\right\} \\ $$$${so}\:{probablity}=\frac{\mathrm{2}}{\mathrm{8}}=\frac{\mathrm{1}}{\mathrm{4}} \\…
Question Number 58050 by Aditya789 last updated on 17/Apr/19 Answered by tanmay last updated on 17/Apr/19 $${D}_{\mathrm{1}} =\left\{\mathrm{1}\:\mathrm{2}\:\mathrm{3}\:\mathrm{4}\:\mathrm{5}\:\mathrm{6}\:\right\} \\ $$$$\:\:{D}_{\mathrm{2}} =\left\{\mathrm{1}\:\mathrm{2}\:\:\mathrm{3}\:\mathrm{4}\:\mathrm{5}\:\mathrm{6}\right\} \\ $$$$\:\:{D}_{\mathrm{3}} \:=\left\{\mathrm{1}\:\mathrm{2}\:\mathrm{3}\:\mathrm{4}\:\mathrm{5}\:\mathrm{6}\right\} \\…
Question Number 57952 by necx1 last updated on 14/Apr/19 $${An}\:{irregular}\:\mathrm{6}\:{faced}\:{die}\:{is}\:{thrown}\:{and} \\ $$$${the}\:{expectation}\:{that}\:{in}\:\mathrm{10}\:{throws}\:{it}\:{will} \\ $$$${give}\:{five}\:{even}\:{numbers}\:{is}\:{twice}\:{the} \\ $$$${expectation}\:{that}\:{it}\:{will}\:{give}\:{four}\:{even} \\ $$$${numbers}.{How}\:{many}\:{times}\:{in}\:\mathrm{15000} \\ $$$${sets}\:{of}\:\mathrm{10}\:{throws}\:{would}\:{you}\:{expect}\:{it} \\ $$$${to}\:{give}\:{one}\:{even}\:{number}? \\ $$ Answered…