The number of terms of the series 54+51+48+... such that sum is 513 is
How many natural numbers between 300 to 500 are multiples of 7 ?
Sum of 5 number in AP is 30 & the sum of their squares is 220, which of the following is the third term?
The sum of first 16 terms of an AP whose first term & third term are 5 & 15 respectively is
There is an AP 1,3,5... ,which term of this AP is 55?