Secondary School (English Medium) (5 to 8) इयत्ता ८ - CBSE Question Bank Solutions for Mathematics

20 × 3 is a multiple of 3 if the digit × is ______ or ______ or ______.

The sum of a two-digit number and the number obtained by reversing the digits is always divisible by ______.

The difference of a two-digit number and the number obtained by reversing its digits is always divisible by ______.

The difference of three-digit number and the number obtained by putting the digits in reverse order is always divisible by 9 and ______.

If    then A = ______ and B = ______.

If    then B = ______.

A four-digit number abcd is divisible by 11, if d + b = ______ or ______.

A number is divisible by 11 if the differences between the sum of digits at its odd places and that of digits at the even places is either 0 or divisible by ______.

If a 3-digit number abc is divisible by 11, then ______ is either 0 or multiple of 11.

If A × 3 = 1A, then A = ______.

If B × B = AB, then either A = 2, B = 5 or A = ______, B = ______.

If the digit 1 is placed after a 2-digit number whose tens is t and ones digit is u, the new number is ______.

A four-digit number abcd is divisible by 4 if ab is divisible by 4.

A three-digit number abc is divisible by 6 if c is an even number and a + b + c is a multiple of 3.

Number 7N + 1 will leave remainder 1 when divided by 7.

If a number a is divisible by b, then it must be divisible by each factor of b.

If AB × 4 = 192, then A + B = 7.

If AB + 7C = 102, where B ≠ 0, C ≠ 0, then A + B + C = 14.

If N ÷ 5 leaves remainder 3 and N ÷ 2 leaves remainder 0, then N ÷ 10 leaves remainder 4.

Find the least value that must be given to number a so that the number 91876a2 is divisible by 8.