Divisibility By 7
You must be knowing how to check if the number is divisible by 2,3,4,5,6,_ ,8,9,10.
Your maths teacher must have told u some but i will tell u more.
But Do you know how to divide by 7
Lets check if 343 is divisible by 7 or not.
Step 1-Double the last digit.(that is 3 in 343 = 3x2=6)
Step 2 - Now , subtract the remaining digit from the the double of last number.(that is 34-6=28 ,which is divisible by 7 , so 343 is divisible by 7)
Divisibility by 7 taken out in 2 Mental steps.
Have any doubts write it in the comment and u will get your doubt cleared.
Step 2 - Now , subtract the remaining digit from the the double of last number.(that is 34-6=28 ,which is divisible by 7 , so 343 is divisible by 7)
Divisibility by 7 taken out in 2 Mental steps.
Have any doubts write it in the comment and u will get your doubt cleared.
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