CTET Solved Paper - UPTET December 2016
and their corresponding division be 
then the largest fraction is
78. If 31x5 is a multiple of 9, where x is a digit, then the value of x will be
- Option : D
- Explanation : (D) By divisibility test, when the sum of all the digits of a number is divisible by 9, then the number is also divisible by 9.
Thus 31x5 is a multiple of 9 only when the sum of all the digits of a number is divisible by 9
∴ 3 + 1 + x + 5 = 9 + x
Hence, from the following given options, value of x - 9
9 + x = 9 + 9 = 18
and 18 is divisible by 9
∴ 195 is a multiple of 9 and x = 9
- Option : D
- Explanation : (D) To find the length of line segment. Divider is used to find the length of line segment.
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