Advertisements
Advertisements
Question
Test the divisibility of the following numbers by 7:
25368
Advertisements
Solution
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
RELATED QUESTIONS
Test the divisibility of the following number by 4:
618
Test the divisibility of the following number by 10:
5790
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:
835*86
State if the following is a prime number?
277
Give an example of a number which is divisible by both 2 and 8 but not by 16.
Write (T) for true and (F) for false against the following statement:
The sum of two consecutive odd numbers is always divisible by 4.
Find the greatest number which divides 615 and 963, leaving the remainder 6 in each case.
Which of the following numbers is divisible by 11?
Test the divisibility of 67529124 by 8.
