# CAT Question Bank - Binomial Theorem

• Number of Questions - 20
Topic - Binomial theorem
Source - Curated Content

• Q1) The sum of the coefficients in the expression (1 + x – 3x^2)^2163 is?

• Q2) Find the coefficient of ‘x’ in the expansion of (1 - 2x^3 + x^5) [1 + (1/x)]^8

• Q3) Find numerically the greatest term in the expansion of (2 + 3x)^9 when x = 3/2

• Q4) If the third term in the expansion of (x + x^logx)^5 is 10,00,000. Find the value of ‘x’. (Note - log in base 10)

• Q5) For (x^2 + 3y)^4, Find the coefficient where the sum of exponents of x and y in the expansion is 5

• Q6) Find the coefficient of x^7 in the expansion of (1+ 3x - 2x^3)^10

• Q7) In the binomial expansion of (a - b)^n, n ≥ 5, the sum of the 5th and 6th terms is zero. Then find the value of a/b.

• Q8) If the coefficient of 4th and 13th terms in the expansion of [x^2 + (1/x)]^n be equal, then find the term which is independent of x

• Q9) Find the coefficient of the term independent of y in the expansion of [(y + 1)/( y^2/3 – y^1/3 + 1) - (y – 1) / (y – y^1/2)]^10

• Q10) A man has 2n + 1 friends. The number of ways in which he can invite at-least n + 1 friends for a dinner is 4096. Find the number of friends of the man.

• Q11) What is the highest power of 12 in (5^36) - 1

• Q12) What is d coefficient of x^204 in (x - 1)(x^2 - 2)(x^3 - 3) ... (x^20 - 20)

• Q13) The sum of the rational terms in (√2 + 3√3 + 6√6)^10 is
a. 12632
b. 12600
c. 126
d. None of these

• Q14) Find coefficient of x^8 in (1 − 2x + 3x^2 − 4x^3 + 5x^4 − 6x^5 + 7x^6)^6

• Q15) Number of terms in the expansion of (1 + x + x^2)^100 is

• Q16) The number of irrational terms in the binomial expansion of (3^(1/5) + 7^(1/3))^100 is

• Q17) In the expansion of (3^(-x/4) + 3^(5x/4))^n, the sum of the binomial coefficients is 64 and the term with greatest binomial coefficient exceeds the third by (n-1), then find x.

• Q18) Find the coefficient of x^4 in (1+ 2x + 3x^2 + ... )^1/2

• Q19)
a) Find the coefficient of x^11 in (1 + x + x^2 + x^3 + ... + x^20)^15
b) Find the coefficient of x^11 in (x + x^2 + x^3 + ... + x^20)^15
c) Find the coefficient of x^11 in (x^3 + x^4 + ... + x^20)^15

68

102

75

92

54

71

115

96