There are 5 black and 6 red bills in a b...

There are 5 black and 6 red bills in a bag. Find one number of ways in which 2 black and 3 red balls can be selected.

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The correct Answer is:

200

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NAGEEN PRAKASHAN-PERMUTATION AND COMBINATION -Exercise F

If .^(16)C(r) = .^(16)C(r+6), then find .^(5)C(r).
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Determine n if (i) ^2n C2:^n C2=12 :1 (ii) ^2n C3:^n C3=11 :1
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Determine n if (i) ^2n C2:^n C2=12 :1 (ii) ^2n C3:^n C3=11 :1
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Determine n if (i) ^2n C2:^n C2=12 :1 (ii) ^2n C3:^n C3=11 :1
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If .^(15)C(r): .^(15)C(r-1) = 1:5, then find r.
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If .^(n-1)P3 :^(n+1)P3 = 5 : 12, find n.
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If .^(n)P(r) = 720 and .^(n)C(r) = 120, then find r. = (5 xx 4 xx 3...
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If ^(n+1)C(r+1): ^nCr: ^(n-1)C(r-1)=11:6:2 find the values of n and r.
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If .^(n)C(4),.^(n)C(5), .^(n)C(6) are in A.P., then find the value of ...
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If alpha=\ \ ^m C2,\ then find the value of \ ^(alpha)C2dot
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