if the sum of 1st 6 terms of an AP is 36 and Sum of first 16 is 256 Find s10 of ap
Thanks alot !!!!!
The AP is: 1, 3, 5, 7, 9......etc. The Sum of 6 terms=36. The sum of 16 terms=256.
Therfore the sum of the 1st. 10 terms will be=100.
Could please explain it properly
Well, the AP starts with: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19
Your AP starts with 1 as the first term, then 2nd term is 1+2=3+2=5+2=7.....etc.
The difference from one term to the next is 2. Then, if you add ALL the ten terms listed above, you should get 100. Clear?
