coxbazar divisional 2014 Q.no.-2
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Hasib went to the kite festival with five friends and bought 12 kites. They were all of different colors. He and his friend Tahmid took 2 kites and told the others to pick any one among other kites. In how many ways can they do it?
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Re: coxbazar divisional 2014 Q.no.-2
Hasib Tahmid could take in (12c 2) way.Then there will be 10 kites.Others can take (10c3)ways.So,there is (12c2)*(10c3)ways. IS IT RIGHT?
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Re: coxbazar divisional 2014 Q.no.-2
Yes, you are right. Answer=$\dbinom {12}{2} ×\dbinom {10}{3}=7920$SYED ASHFAQ TASIN wrote: ↑Thu Dec 15, 2016 7:25 pmHasib Tahmid could take in $(12c 2)$ way.Then there will be $10$ kites.Others can take $(10c3)$ways.So,there is $(12c2)×(10c3)$ways. IS IT RIGHT?