Question

what is the divisibility rule for 7?
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Answer 1

Answer:

Divisor

7

Divisibility condition

Subtracting 2 times the last digit from the rest gives a multiple of 7.

(Works because 21 is divisible by 7.) 483: 48 − (3 × 2) = 42 = 7 × 6.

Subtracting 9 times the last digit from the rest gives a multiple of 7.

Examples:

483: 48 − (3 × 9) = 21 = 7 × 3.

Answer 2

Answer:

The divisibility rule of 7 states that, if a number is divisible by 7, then “the difference between twice the unit digit of the given number and the remaining part of the given number should be a multiple of 7 or it should be equal to 0”. For example, 798 is divisible by 7. Explanation: The unit digit of 798 is 8.

Step-by-step explanation:

Check the attached picture to understand properly.

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