Asked by Anonymous
If a natural number is divisible by 7, then it must also be divisible by 21.
Answers
Answered by
Reiny
not true
e.g. 35 is divisible by 7 but not by 21
But ....
"If a natural number is divisible by21 , then it must also be divisible by 7" is true.
Can you see the logic behind the last statement ?
e.g. 35 is divisible by 7 but not by 21
But ....
"If a natural number is divisible by21 , then it must also be divisible by 7" is true.
Can you see the logic behind the last statement ?
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