ICSE ICSE Class 8 - CISCE Question Bank Solutions

factorise: 5 + 3a - 14a²

factorise: (2a + b)² + 5(2a + b) + 6 

factorise: 1 − (2x + 3y) − 6(2x + 3y)²  

The interest on a certain sum of money is Rs. 1,480 in 2 years and at 10 percent per year. Find the sum of money.

factorise: (x - 2y)² - 12(x - 2y) + 32 

factorise: 8 + 6(a + b) - 5(a + b)² 

Factorise: 2(x + 2y)² − 5(x + 2y) + 2

If a polyhedron has 10 faces and 8 vertices, find the number of edges in it.

If a polyhedron has 10 vertices and 7 faces, find the number of edges in it.

At what rate per cent per annum will Rs. 630 produce an interest of Rs. 126 in 4 years ?

State, the number of faces, number of vertices and number of edges of:
(i) a pentagonal pyramid
(ii) a hexagonal prism

At what rate, percent per year will a sum double itself in `6 1/4` years?

Find the time in which Rs.1200 will amount to Rs.1536 at 3.5% per year.

Find the least number by which 1323 must be multiplied so that the product is a perfect cube.

Find the smallest number by which 8768 must be divided so that the quotient is a perfect cube.

Find the smallest number by which 27783 be multiplied to get a perfect cube number.

Dice are cubes where the sum of the numbers on the opposite faces is 7. Find the missing numbers a, b and c.

Find the cube-root of 64 

Find the cube-root of 343

Find the cube-root of 729.