Question

Exercise 5.4
1. Check the divisibility of following numbers by 2.
(a) 790
(b) 643
2. Check the divisibility of following numbers by 3.
(c) 1804
(a) 57102
(b) 1812
(c) 4382
3. Check the divisibility of following numbers by 5.
(a) 7576
(b) 8505
(c) 98040
Which of the following numbers are divisible by 10?
(a) 23975
(b) 10600
(c) 11010​

Answer 1

Answer:

1.a)it is divisible

b) it is not divisible

2.a)not divisible

b) divisible

c) divisible

d) not divisible

3.a)not divisible

b) divisible

c) divisible

4.a)not divisible

b) divisible

c) divisible

Step-by-step explanation:

1. for a number to be divisible by 2, the digit at one's place should be an even number

2. for a number to be divisible by 3 the sum of all digits should be divisible by 3

3. for a number to be divisible by 5 the digit at ones place should be 5 or 0

4. for a number to be divisible by 10 the digit at ones place should be zero

Answer 2

Answer:

1.

a) divisible

b) not divisible

2.

c) not divisible

a) divisible

b) divisible

c) not divisible

3.

a) not divisible

b) divisible

c) divisible

4. (b) and (c)

Step-by-step explanation:

1. last digit should be even

2. sum of digit should be multiple of 3

3. last digit should be 0 or 5

4. last digit should be 0

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