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For the natural number m, n, if ( 1- y )...

For the natural number m, n, if `( 1- y ) ^(m) (1 + y) ^( n) =1 + a _(1) y + a _(2) y ^(2) + ...+ a _( m + n) y ^( m +n) and a _(1) = a _(2) = 10,` then the value of (m+n) is equal to :

A

100

B

80

C

83

D

64

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Knowledge Check

  • For natural numbers m, n if (1-y)^(m)(1+y)^(n) = 1+a_(1)y+a_(2)y^(2) + "……." and a_(1) = a_(2) = 10 , then (m,n) is :

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    B
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    C
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    (35, 20)
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  • If m^n - m = (m - n)! where m > n > 1 and m = n^2 then the value of m^2 + n^2 is :

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