If A is the A.M. of the roots of the equation and is the G.M. of the roots of the equation then ____.
None of the above
If and are in H.P., then are in ____.
A.P.
G.P.
H.P.
None of the above
The sum of terms of ____.
The sum to terms of the series is ____.
The sum of the series to n terms is ____.
Sum of the squares of first natural numbers exceeds their sum by 330, then ____.
8
10
15
20
The term of series will be ____.
Sum of the series to n terms is ____.
____.
Is divisible by 5
Is an odd integer divisible by 5
Is an even integer which is not divisible by 5
Is an odd integer which is not divisible by 5
If the term of a series be , then the sum of terms of the series is ____.