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2016-01-30T16:20:54+05:30

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There are 25 students total. 4 students are taken at a time. Then no. Of ways 25!/(25-4)!4!=7286400 ways.
1 2 1
Pls mark as brainliest.
Sorry the answer is wrong I didn't read it full
Pls give the answer
It is ncr*ncr=25c4*25c21=6453400
I can not understand
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2016-01-30T16:49:17+05:30

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There will be two cases.
In first 3 girls and 1 boy, number of ways = 10C3× 15C1 = 1800 ways
In second case, 4 girls  and 0 boys,
number of ways = 10C4 =210
so total number of possible ways = 1800 + 210 = 2010
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