Question

Answer the following questions-
1) Find if the given numbers are divisible by 11:
(i) 56828
(ii) 80925
2) Replace M by the smallest whole number to make the number divisible by 3: 26M45
3) How much distance will you have to travel in going around each of the following figures?

Answer 1

Step-by-step explanation:

1) Divisibility test for 11

If the number of digits is even, add the first and subtract the last digit from the rest. The result must be divisible by 11. If the number of digits is odd, subtract the first and last digit from the rest. The result must be divisible by 11.

2) Divisibility rule for 3

states that a number is completely divisible by 3 if the sum of its digits is divisible by 3. Consider a number, 308. To check whether 308 is divisible by 3 or not, take sum of the digits (i.e. 3+0+8= 11). ... If the sum is a multiple of 3, then the original number is also divisible by 3.

number should be 2+6+4+5+M which is divisible by 3

3) i- 36 cm

ii- 18 cm

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