Q30 of 48 Page 408

Fill in the blanks to make the statements true.

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

This is a direct consequence from the divisibility by 11 rule.


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28

Fill in the blanks to make the statements true.

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

 29

Fill in the blanks to make the statements true.

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 ………….. .

 31

Fill in the blanks to make the statements true.

If A × 3 = 1A, then A = …………… .

 32

Fill in the blanks to make the statements true.

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