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प्रश्न
Test the divisibility of the following numbers by 7:
2345
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उत्तर
To determine if a number is divisible by 7, double the last digit of the number and subtract it from the number formed by the remaining digits. If their difference is a multiple of 7, the number is divisible by 7.
2345 is divisible by 7.
We have 234 − 2 × 5 = 224, which is a multiple of 7.
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संबंधित प्रश्न
Test the divisibility of the following number by 2:
357986
Test the divisibility of the following number by 4:
35056
Test the divisibility of the following numbers by 7:
6021
Test the divisibility of the following numbers by 7:
14126
Test the divisibility of the following numbers by 8:
9364
Test the divisibility of the following numbers by 9:
647514
In the following number, replace * by the smallest number to make it divisible by 3:
8*711
In the following number, replace * by the smallest number to make it divisible by 11:
9*8071
Write (T) for true and (F) for false against the following statement:
If a number is divisible by 4, it must be divisible by 8.
Test the divisibility of 67529124 by 8.
