Question

Using divisibility tests, determine which of the following numbers are divisible by 10:(a) 54450
(b) 10800
(c) 7138965
(d) 7016930
(e) 10101010

Answer 1

Answer:-

Explanation:-

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Divisibility Rule of 10 :-

A number is said to be divisible by 10 if its one's place or last digit of the number consists of zero (0).

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A.T.Q,

a) 10800 - This number is divisible by 10 as it has its last digit as zero (0).

b) 7138965 - This number is not divisible by 10

c) 7016930 - This number is divisible by 10

d) 10101010- this number is divisible by 10

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Remember:-

Divisibility Rules:-

2 - A number is divisible by 2 if its last digit is an even number.

3 - A number is said to be divisible by 3 if sum of all digits are multiple of 3.

4 - A number is said to be divisible by 4 if its last two digits are a factor of 4.

5 - A number is said to be divisible by 5 is its last digit consists of 5 and 10.

8 - A number is said to be divisible by 8 if its last 3 digits are multiple of 8.

9 - A number is said to be divisible by 3 , if sum of all digits are a multiple of 9. (This rule is same like of 3)

Answer 2

Answer:

The number which is divisible by 10 the unit digit should be 0.

Step-by-step explanation:

a) 54450

soln-In 54450 unit digit is 0,which is divisible 10.

b)10800

soln-In 10800 the unit digit is 0,which is divisible by 10.

c) 7138965

soln-In 7138965unit digit is 5,which is not divisible by 10.

d)7016930

soln-In 7016930 the unit digit is 0,which is divisible by 10.

e) 10101010

soln-In 10101010 the unit digit is 0,which is divisible by 10.

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