Question

Check if 4786 is divisible by 2 and 4


b. Check if 10250 is divisible by 5 and 9.


c. Check if 54321 is divisible by 3 and 6


d. Check if 1050 is divisible by 10 and 8.

Answer 1

4786 is divisible by 2 because the end number is 6 and 4786 is not divisible by 4 since the 86 is not divisible by 4

10250 is divisible by 5 because the no. in tens place is 0 and 10250 is not divisible by 9 because when you do 1+0+2+5+0= 8 meaning it is not divisible by 9

54321 is divisible by 3 because 5+4+3+2+1= 15 and 15 is divisible by 3 and 54321 is not divisible by 6 because 54321 is divisible by 3 but not 2

1050 is divisible by 10 since the last digit is 0 and 1050 is is not divisible by 8 because the last three digits (050) are not divisible by 8

Answer 2

Answer:

ஃ a) 4786 is divisible by 2 but not 4.

ஃ b) 10250 is divisible by 5 but not 9.

ஃ c) 54321 is divisible by 3 but not 6.

ஃ d) 1050 is divisible by 10 but not 8.

Explanation:

a) Divisibility Rule of 2 :- Last digit should be an even number.

4786 → The last digit is divisible by 2.

4786 is divisible by 2.

Divisibility Rule of 4 :- Last two digits should be divisible by 4.

Last two digits are not divisible by 4.

4786 is not divisible by 4.

b) Divisibility Rule of 5 :- Last digit should be 5 or 0.

10250 → The last digit is divisible by 5.

10250 is divisible by 5.

Divisibility Rule of 9 :- Sum of all digits should be divisible by 9.

1 + 0 + 2 + 5 + 0 = 8 ( It is not divisible by 9 )

10250 is not divisible by 9.

c) Divisibility Rule of 3 :- Sum of all digits should be divisible by 3.

5 + 4 + 3 + 2 + 1 = 15 ( It is divisible by 3 )

54321 is divisible by 3.

Divisibility Rule of 6 :- To know how to find the number is divisible by 6, you have to find that both 2 and 3 are divisible by 6.

Divisibility Rule of 2 :- Last digit should be an even number.

54321 → The last digit is not divisible by 2.

We have already found that the number is divisible by 3.

But, 54321 is not divisible by 6.

d) Divisibility Rule of 10 :- Last digit should be 0.

1050 → The last digit is divisible by 10.

1050 is divisible by 10.

Divisibility Rule of 8 :- Last three digits should be divisible by 8.

Last three digits are not divisible by 8.

1050 is not divisible by 8.