The coefficient of x-7 in the expansion of will be
The total number of terms in the expansion of (x+y)100 +(x-y)100 after simplification is
51
202
100
50
The coefficient of xn in the expansion of (1+2x+3x2 +...) is
0
-1
1
2
From 12 books, the difference between number of ways a selection of 5 books when one specified book is always excluded and one specified book is always included, is
64
118
132
330
The sum of the digits in the unit place of all numbers formed with the help of 3,4,5,6 taken all at a time is
18
108
432
144
How many 10 digit numbers can be written by suing digits 9 and 2
10c1 + 9c2
210
10c2
10!
The number of different permutations of the word 'BANANA' is
6
36
30
60
The number of positive odd divisors of 216 is
4
8
12
The total number of terms in the expansion of (x+y)100 + (x-y)100 after simplification is
The number of ways of distributing 8 identical balls in 3 distinct boxes, so that move of the boxes is empty, is
21
38
8C3
5