## coxbazar divisional 2014 Q.no.-2

For students of class 9-10 (age 14-16)
Mahfuz Sobhan
Posts: 25
Joined: Sat Feb 07, 2015 5:40 pm

### coxbazar divisional 2014 Q.no.-2

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?

SYED ASHFAQ TASIN
Posts: 21
Joined: Thu Jun 02, 2016 6:14 pm

### 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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samiul_samin
Posts: 999
Joined: Sat Dec 09, 2017 1:32 pm

### Re: coxbazar divisional 2014 Q.no.-2

SYED ASHFAQ TASIN wrote:
Thu Dec 15, 2016 7:25 pm
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?
Yes, you are right. Answer=\$\dbinom {12}{2} ×\dbinom {10}{3}=7920\$