Secondary School (English Medium) (5 to 8) कक्षा ८ - CBSE Question Bank Solutions

Factorize each of the following algebraic expressions:
4(x + y) (3a − b) +6(x + y) (2b − 3a)

Find the least number which must be added to the following numbers to make them a perfect square:

4931 

Find the least number which must be added to the following numbers to make them a perfect square:

4515600

Find the least number which must be added to the following numbers to make them a perfect square:

37460

Find the least number which must be added to the following numbers to make them a perfect square:

506900

Find the greatest number of 5 digits which is a perfect square.

Find the least number of 4 digits which is a perfect square.

Find the least number of six digits which is a perfect square.

Factorize each of the following expressions:
qr − pr + qs − ps

Factorize each of the following expressions:
p²q − pr² − pq + r²

Find the greatest number of 4 digits which is a perfect square.

A General arranges his soldiers in rows to form a perfect square. He finds that in doing so, 60 soldiers are left out. If the total number of soldiers be 8160, find the number of soldiers in each row.

The area of a square field is 60025 m². A man cycles along its boundary at 18 km/hr. In how much time will he return at the starting point?

The cost of levelling and turfing a square lawn at Rs 2.50 per m² is Rs 13322.50. Find the cost of fencing it at Rs 5 per metre. 

Find the greatest number of three digits which is a perfect square.

Find the smallest number which must be added to 2300 so that it becomes a perfect square.

Factorize each of the following algebraic expression:
4x² + 12xy +9y²

Factorize each of the following algebraic expression:
9a² − 24ab + 16b²

Factorize each of the following algebraic expression:
p²q² − 6pqr + 9r²

Factorize each of the following algebraic expression:
36a² + 36a + 9