1.

If the first term of an AP is -5 and the common difference is 2, then the sum of the first 6 terms is

Answer» Correct Answer - A
Here `a=-5, d=2, n=6`
`:. S_(n)=(n)/(2)[2a+(n-1)d]`
`rArr S_(6)=(6)/(2)[(2(-5)+(6-1)(2)]=3(-10+10)=0`


Discussion

No Comment Found