SSC CHSL Model Paper 11

© examsiri.com

Question : 71 of 100

Marks: +1, -0

Find the sum of

1+15 + 65 + 175

________upto 20 terms.

120000
160000
320000
8000

Solution:

∴ Sum upto two terms

=1+15=16 = 2^4

Sum upto three terms

=81 = 3^4

Then, Sum upto 20 terms

= 20^4 = 160000

© examsiri.com

Go to Question:

Prev Question

Next Question