Question
Find the least value of x for which 57x716 is divisible by 9.
The correct answer is
1
The sum of the digits of 57x716 must be divisible by 9. The sum without x is (5+7+7+1+6) = 26.
To make it divisible by 9, x must be 1, since 26 + 1 = 27, which is divisible by 9.
Thus, the correct answer is 1.
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Important Questions from Divisibility Rules
Which of the following numbers is NOT divisible by 11?
If 321y72 is a multiple of 6, where y is a digit, what is the least value of y?
From the given numbers A, B, C and D, which number is NOT divisible by 11?
A = 712712
B = 177210
C = 64614
D = 756148
Which of the following numbers is divisible by 7 ?
- Which of the following numbers is divisible by 71?
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