(English Medium) ICSE Class 10 - CISCE Question Bank Solutions for Mathematics

Find the 9^th term of the series :

1, 4, 16, 64, ...............

Q.12

Q.13

Q.14 

Q.15

Q.16

Q.17 

Q.18

Q.19

Q.20

Find the G.P. whose first term is 64 and next term is 32.

Which term of the G.P.:

`-10, 5/sqrt(3), -5/6,....` is `-5/72`?

The fifth term of a G.P. is 81 and its second term is 24. Find the geometric progression.

Fourth and seventh terms of a G.P. are `1/18` and `-1/486` respectively. Find the G.P.

If the first and the third terms of a G.P. are 2 and 8 respectively, find its second term.

The product of 3^rd and 8^th terms of a G.P. is 243. If its 4^th term is 3, find its 7^th term.

Find the geometric progression with 4^th term = 54 and 7^th term = 1458.

Second term of a geometric progression is 6 and its fifth term is 9 times of its third term. Find the geometric progression. Consider that each term of the G.P. is positive.

The fourth term, the seventh term and the last term of a geometric progression are 10, 80 and 2560 respectively. Find its first term, common ratio and number of terms.

The fifth, eight and eleventh terms of a geometric progression are p, q and r respectively. Show that : q² = pr.