1.

State which of the statement is True or False. (i) The sum of the series Σ(for r=0 to 10)20Cr is 219+20C10/2(ii) The expression 79 + 97 is divisible by 64.(iii) The number of terms in the expansion of [(2x + y3)4]7 is(iv) The sum of coefficients of the two middle terms in the expansion of (1 + x)2n – 1 is equal to 2n – 1Cn.(v) The last two digits of the numbers 3400 are 01.(vi) If the expansion of (x -1/x2)2n contains a term independent of x, then n is a multiple of 2.(vii) Number of terms in the expansion of (a + b)n where n ∈ N is one less than the power n.

Answer»

(i) False

(ii) True

(iii) False

(iv) False

(v) True

(vi) False

(vii) False



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