/
None of the above
18
16
12
-10
/
7
8
9
10
In if the ratio of term from the beginning to the term from the end is , then ____.
None of the above
/
5
6
4
3
/
7
8
9
10
/
9
10
8
6
/
2
3
4
/
If the coefficients of terms of are in A.P., then r = ____.
6
7
8
9
/
/
None of the above
None of the above
equal
equal in magnitude but opposite in sign
reciprocal to each other
None of the above
In the expansion of , the constant term is ____.
– 20
20
30
– 30
In the expansion of , the coefficient of is ____.
None of the above