Playing with numbers (Posshika Sharma)

Select the generalised form of : 4038

• 4 x 10 + 0 x 10 + 3 x 10 + 8 x 10

• 400 x 10 + 00 x 10 + 3 x 10 + 8

• 4 x 1000 + 3 x 10 + 8

• 4 x 1000 + 0 x 100 + 3 x 10 + 8

Write the usual form of : 100 x 9 + 5

• 950

• 905

• 195

• 915

Any two digit number ab made of digits a and b can be written as :

• 10 x a + b

• 10b + a

• Both (i) and (ii)

• None of these

If any two digit number ab is reversed (ba) and added to the original number, the sum is always a multiple of :

• 3

• 5

• 9

• 11

If the digits of a three digit number (abc) are put in reverse order and the smaller one is subtracted from the larger one, the difference is always completely divisible by :

• 55

• 99

• 77

• 66

If any two digit number (ab) is reversed and the smaller one is subtracted from the larger one, the difference is always completely divisible by :

• 3

• 5

• 9

• 11

If the division of N ÷ 5 leaves a remainder 4. What might be the one's digit?

• 0

• 9

• 3

• None of these

What is the smallest value of x in '230x' to make it divisible by 4?

• 0

• 2

• 4

• 8

What is the least value of y in '23y02' to make it divisible by 3?

• 3

• 9

• 2

• 6

What is the smallest value of m in '530m' to make it divisible by 6?