Chapter 5: Binomial Theorem, Sequences And Series - Online Test
Q1. The value of 2 + 4 + 6 +…….+ 2n is
Answer : Option D
Explaination / Solution:
Q2. The coefficient of x6 in (2 + 2x)10
is
Answer : Option D
Explaination / Solution:
Q3. The coefficient of x8y12
in the expansion of (2x + 3y)20 is
Answer : Option D
Explaination / Solution:
Q4. If nC10 > nCr
for all possible r, then a value of n is
Answer : Option D
Explaination / Solution:
Q5. If a is the arithmetic mean and g is the geometric mean of two numbers, then
Answer : Option B
Explaination / Solution:
Q6. If (1 + x2)2 (1 + x)n
= a0 + a1x + a2x2 +……..+ xn+4
and if a0, a1, a2 are in AP, then n is
Answer : Option C
Explaination / Solution:
Q7. If a, 8, b are in AP, a, 4, b are in GP, and if a, x, b are in HP then x is
Answer : Option A
Explaination / Solution:
Q8. The sequence 
, form an
, form an
Answer : Option C
Explaination / Solution:
Q9. The HM of two positive numbers whose AM and GM are 16, 8 respectively is
Answer : Option D
Explaination / Solution:
Q10.
If Sn denotes the sum of n terms of an AP whose common difference is d, the value of Sn - 2Sn-1 + Sn-2 is
Answer : Option A
Explaination / Solution:
No Explaination.
