CTET 2 Math and Science Feb 2015 Paper

Question : 44 of 120

Marks: +1, -0

The values of y for which the 4-digit number

51y^{3}

is divisible by 9 is

Solution:

Divisibility Rule '9'. If the sum of all the digit is divisible by 9 then the number is divisible by 9.

5\;1\;y\;3=5+1+y+3

=9+{y}

9+y

is divisible if

y=0

y=9

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