Advertisements
Advertisements
प्रश्न
Test the divisibility of the following numbers by 7:
25368
Advertisements
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.
25368 is divisible by 7.
We have 2536 − 2 × 8 = 2520, which is a multiple of 7.
APPEARS IN
संबंधित प्रश्न
Test the divisibility of the following number by 2:
59628
Test the divisibility of the following number by 3:
733
Test the divisibility of the following numbers by 6:
872536
Test the divisibility of the following number by 11:
83721
In the following number, replace * by the smallest number to make it divisible by 9:
65*5
In the following number, replace * by the smallest number to make it divisible by 9:
2*135
In the following number, replace * by the smallest number to make it divisible by 9:
6702*
Test the divisibility of 10001001 by 3.
Write (T) for true and (F) for false against the following statement:
The sum of two consecutive odd numbers is always divisible by 4.
Why are divisibility tests useful?
