Question

Value (s) of x for which the fourth term in the ex pansion of  is 40 is (are)

Solution

Correct option is

1/16, 2

SIMILAR QUESTIONS

Q1

The coefficient of xk in the expansion of E = 1 + (1 + x) + (1 + x)2 +…+ (1 + x)n is

Q2

Coefficient of x7 in the expansion of (1 – 2x + x3)6 is

Q3

Coefficient of x8 in the expansion of (1 + 2x – x3)6 is

Q4

If the middle tern in the expansion of  is 40 then x equals

Q5

If the term independent of x in the expansion of  is 405, then kequals

Q6

In the third term in the expansion  is 2, then x equals

Q7

If the fifth term in the expansion of  does not depend upon x, then  equals

Q8

 the greatest term in absolute value in the expansion of (a +b)50 is

Q9

Coefficient of the term independent of x in the ex pansion of  is