Question

Divisibility rule from 1 to 10​

Answer 1

Answer:

Divisibility by 1

Rule 1: Every integer n is divisible by 1.

Divisibility by 2

Rule 2: An integer n is divisible by 2 if and only if n is even, i.e., the last digit of n is either 0, 2, 4, 6, or 8.

Divisibility by 3

Rule 3: An integer n is divisible by 3 if and only if the sum of the digits of n is divisible by 3.

Divisibility by 4

Rule 4: An integer n is divisible by 4 if and only if the number formed by the last two digits of n is divisible by 4.

Divisibility by 5

Rule 5: An integer n is divisible by 5 if and only if the last digit of n is either 0 or 5.

Divisibility by 6

Rule 6: An integer n is divisible by 6 if and only if it is divisible by both 2 and 3, i.e., n is even and the sum of the digits of n is divisible by 3.

Divisibility by 7

Rule 7: An integer n is divisible by 7 if and only if the number formed by removing the last digit of n subtract the number formed by two multiplied by the last digit of n is divisible by 7.

Divisibility by 8

Rule 8: An integer n is divisible by 8 if and only if n is even, n2 is even, and n4 is even.

Divisibility by 9

Rule 9: An integer n is divisible by 9 if and only if the sum of the digits of n is divisible by 9.

Divisibility by 10

Rule 10: An integer 

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Answer 2

Step-by-step explanation:

Divisibility rule for 1

Every number is divisible by 1.

Divisibility rule for 2

A number is divisible by 2 , if last digit is 0,2,4,6,8.

Divisibility rule for 3

If the sum of digit of number is divisible by 3, then number is divisible by 3.

Divisibility rule for 4

A number is divisible by 4, if it's that two digit are divisible by 4.

Divisibility rule for 5

A number is divisible by 5 , if it's last digit is '5' or '0'.

Divisibility rule for 6

A number is divisible by 6 , if

• it is divisible by 2
• it is divisible by 3

Divisibility rule for 7

If subtracting the twice of last digit from the number formed by, remaining digit is divisible by 7, then the number is divisible by 7.

Divisibility rule for 8

A number is divisible by 8,if it's last 3 digits are divisible by 8.

Divisibility rule for 9

If the sum of digit of number is divisible by 9 , then the number is divisible by 9.

Divisibility rule for 10

A number is divisible by 10 , if last digit is 0.

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