(English Medium) ICSE Class 9 - CISCE Question Bank Solutions

Find the difference between simple and compound interest on Rs 5000 invested for 3 years at 6% p.a., interest payable yearly.

A man borrows Rs 62500 at 8% p.a., simple interest for 2 years. He immediately lends the money out at CI at the same rate and for same time. What is his gain at the end of 2 years?

The simple interest on a certain sum for 3 years at 4% is Rs 600. Find the compound interest for the same sum at the same percent and in the same time.

The difference between simple interest and compound interest compounded annually on a certain sum is Rs.448 for 2 years at 8 percent per annum. Find the sum.

The difference between C.I. payable annually and S.I. on Rs.50,000 for two years is Rs.125 at the same rate of interest per annum. Find the rate of interest.

Find the cube of: 2a - 5b

Find the cube of: 4x + 7y

Find the cube of: `3"a" + (1)/(3"a")`

Find the cube of: `4"p" - (1)/"p"`

Find the cube of: `(2"m")/(3"n") + (3"n")/(2"m")`

Find the cube of: `"a"  - (1)/"a" + "b"`

If `5x + (1)/(5x) = 7`; find the value of `125x^3 + (1)/(125x^3)`.

If `3x - (1)/(3x) = 9`; find the value of `27x^3 - (1)/(27x^3)`.

If `x + (1)/x = 5`, find the value of `x^2 + (1)/x^2, x^3 + (1)/x^3` and `x^4 + (1)/x^4`.

If `"a"  - (1)/"a" = 7`, find `"a"^2 + (1)/"a"^2 , "a"^2 - (1)/"a"^2` and `"a"^3 - (1)/"a"^3`

If `"a"^2 + (1)/"a"^2 = 14`; find the value of `"a"^3 + (1)/"a"^3`

If `"m"^2 + (1)/"m"^2 = 51`; find the value of `"m"^3 - (1)/"m"^3`

If `9"a"^2 + (1)/(9"a"^2) = 23`; find the value of `27"a"^3 + (1)/(27"a"^3)`

If `x^2 + (1)/x^2 = 18`; find : `x^3 - (1)/x^3`

If `"p"  + (1)/"p" = 6`; find : `"p"^3 + (1)/"p"^3`