Find the sum:
-10+(-10)+(-10)+.......10times
-100
100
0
1000
If the given numbers are of like signs, then add the absolute values directly and give the common sign for the result.
Here, the common sign is "-"
So, -10+(-10)+(-10)+.......10times=-(10×10)=-100
Hence, option (A) is correct.
Find the sum : ∑10n=1{(12)n−1+(15)n+1}
Find the sum : -10+(-10)+(-10) +.......10times