IA
2.3. Find the sum of first 16 terms of the A P. 10, 6,
2.........
[Board Term-2, 2012, Set (32)]
Answers
Answered by
1
In the given AP,
a= 10 and d= 6-10= (-4)
To find sum of first 16 terms:
Using the formula n/2 [2a+(n-1)d]
= 16/2[20+ 15(-4)]
= 8[-40]
= -320
Answer: Sum of first 16 terms is -320
Hope this solves your doubt, please mark this as the brainliest
Similar questions