Q20 of 48 Page 408

Fill in the blanks to make the statements true.

3x5 is divisible by 9 of the digit x is ………………. .

We know that a number is a multiple of 9 if the sum of its digits is divisible by 9.


⇒ 3 + x + 5 = x + 8


⇒ x + 8 is divisible by 9 if x + 8 = 9, which gives x = 1.


More from this chapter

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18

Fill in the blanks to make the statements true.

3134673 is divisible by 3 and …………….. .

 19

Fill in the blanks to make the statements true.

20x3 is a multiple of 3 if the digit x is ……. Or ….. or ……. .

 21

Fill in the blanks to make the statements true.

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

 22

Fill in the blanks to make the statements true.

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