Questions
If and are the greatest values of respectively. Then
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a
a=2b
b
b=2a
c
a = b
d
none of these
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Correct option is A
We know that the greatest value of nCr is given by nCn/2 if n is even nCn−12 or nCn+12, if n is odd ∴ a= greatest value of 2nCr=2nCn and, b= Greatest value of 2n−1Cr=2n−1Cn−1⇒ab= 2nCn 2n−1Cn−1=2nn2n−1Cn−12n−1Cn−1=2⇒a=2bSimilar Questions
is equal to
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