Question

"Write the divisibility rule by 7"

Answer 1

Step-by-step explanation:

• "double the unit digit of the given number
• subtract above number from the number formed by excluding the unit digit of the given number
• if the number so obtained is divisible by 7 then the given number is divisible by 7 "

Answer 2

Step-by-step explanation:

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.