Normal type of MCQ with one correct option
The number of terms which are free from fractional powers in the expansion of (a1/5 + b2/3)45, a ( b is
9
15
4
none of these
Normal type of MCQ with one correct option
Sum of coefficients in the expansion of (1 + x ( 3x2)4163 is
0
1
(1
none of these
9
10
5
none of these
30
31228
32
0
A
B
C,D
A,B & D
22n
(n-1).22n
n.22n
(n+1).22n
t\8n
8n2-4
8n2-4n
8n-4
none of these
Assertion(Reason
A: Greatest coefficient in the expansion of (1+5x)8 is 8C4 54. R: Greatest coefficient in the expansion of (1+x)2n is the middle term.
Both A and R are true and R is correct explanation of A
Both A and R are true and R is not correct explanation of A
A is true, R is false
A is false, R is true