Question

There is 15 stations between A and B. Train stopped only five stations between A and B, in how many ways tramm stopped it none of the stations are consecutive ?

Bank Exams

Maths

Solution

166

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Sol: ( N_{0} cdot sigma_{0} ) stations arailable ( =15 ) no. of stations at which trainstropped = : No. of ways that the train can stop at s stations out of is is - [ 15 mathrm{c}=frac{15 !}{5 !(15-5) !}=frac{151}{51 times 101}=sqrt[3]{3+28 k} ] ( tan (cos x)(3) ) ( downarrow ) [ frac{18 times 14 times 13 times 12^{3} times 11}{8 times 4 times 3 times 2} ] ( =21 times 143=3003 ) ths