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RD SHARMA ENGLISH-COMBINATIONS-All Questions
- Evaluate the following: \ sum(r=1)^5\ ^5Cr
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- If \ ^n C(12)=\ \ ^n C5,\ find the value of n
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- If \ ^n C(10)=\ \ ^n C(12) f i n d ^(23)Cn
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- If \ ^(18)Cx=\ \ ^(18)C(x+2),\ Solve \ for \ x
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- If \ ^8Cr-\ ^7C3\ =^7C2\ find r
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- If .^(n+2)C8:^(n-2)P4:: 57 : 16 , find n
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- If \ ^(16)Cr=\ \ ^(16)C(r+2), find \ ^(r) C4
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- If C(n,4) = C(n,6). Find C(12,n)
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- If \ ^(24)Cx=\ ^(24)C(2x+3) find x
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- If \ ^(15)C(3r)=\ ^(15)C(r+3), find \ rdot
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- If 15Cr :15C(r-1)=11 :5 find r.
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- If \ ^(28)C(2r):\ ^(24)C(2r-4)=225 : 11 , find r
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- if C(2n,3):C(n,2)=44:3 find n
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- If alpha=\ \ ^4 C2,\ then find the value of \ ^(alpha)C2dot
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- For all positive integers n , show that \ ^(2n)Cn+\ ^(2n)C(n-1)=1/2(\ ...
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- From a class of 32 students, 4 are to be chosen for a competition. In ...
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- Three gentlemen and three ladies are candidates for two vacancies. A ...
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- If there are 12 persons in a party, and if each two of them shake hand...
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- A question paper has two parts, Part A and party B each containing 10 ...
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- In how many ways a committee of 5 member can be selected from 6 men an...
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