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Statement-1 (Assertion) and Statement-2 (Reason) Each of the these examples also has four laternative choices , only one of which is the correct answer. You have to select the correct choice as given below. Number of distincet terms in the sum of expansion(1 + ax)^(10)+ (1-ax)^(10)is 22.

Answer»

Statement-1 is TURE ,Statement-2 is treu, Statement-2 is a CORRECT explanation for Statement-1
Statement-1 is ture ,Statement-2 is treu, Statement-2 is nota correct explanation for Statement-1
Statement-1 is TRUE ,Statement-2 is false
Statement-1 is true ,Statement-2 is ture

Solution :NUMBER of terms in the expansion of `(1 + X)^(n)`
in ` n+ 1AA n in N `
`because (1 + ax)^(10) + (1 + ax)^(10) = 2 {1 + ""^(10)C_(2) (ax)^(2)`
` + ""^(10)C_(4) (ax)^(4) + ""^(10)C_(4) (ax)^(4) + ""^(10)C_(6) (ax)^(6) + ""^(10)C_(8) (ax)^(8) + ""^(10)C_(10) (ax)^(10)}`
` therefore ` Number of distinct terms = 6
`rArr ` Statement-1 is false but Statement-2 is obviously true .


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