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Column I, Column II The coefficien...

Column I, Column II The coefficient of the two consecutive terms in the expansion of `(1+x)^n` will be equal, then `n` can be, p. 9 If `15^n+23^n` is divided, by 19, then `n` can be, q. 10 `^10 C_0^(20)C_(10)-^(10)C_1^(18)C_(10)+^(10)C_2^(16)C_(10)-` is divisible by `2^n ,t h e nn` can be, r. 11 If the coefficients of `T_r , T_(r+1),T_(r+2)` terms of `(1+x)^(14)` are in A.P., then `r` is less than, s. 12

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