If the middle term in the expansion of (1 + x)2n is the greatest term, then x lies in the interval
(n - 2, n)
(n - 1, n)
To find the coefficient of x4 in the expansion of , the interval in which the expansion is valid, is
176
336
352
84
B.
336
If for some positive integer n, the coefficients of three consecutive terms in the binomial expansion of
(1 + x)n + 5 are in the ratio 5 : 10 : 14, then the largest coefficient in the expansion is :
330
252
792
462