Question

sum of 5 terms of an AP. is the same as sum of 11 terms then sum of 16 terms is
a] 0
b]16
c]-16
d]32

Answer 1

Sum of 16 terms =0

As we know that

Sn= n/2[2a+ (n-1)d]

So, S5=S11

Applying this formulae we get an equation between a and d.

Now for S16 apply same formulae and replace a or d from the equation and your answer is 0.

See the image for full answer.

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Answer 2

Answer:

A)zero

Step-by-step explanation:

zero=0

zero×zero=0

zero+zero=0

zero-zero=0

Therefore, the answer is zero.

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