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UGC NET CSE | June 2019 | Part 1 | Question: 23

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ANSWER WILL BE

D: 24

because

if we take the smallest number =x

then the number will be 3x,4x,5x and 7x

and adding 3x,4x,5x,7x to each other then it will be 19x

so,19x=152

or,x=8

3x=3 x 8=24

4x= 4 x 8=32

5x=5 x 8=40

and 7x=7 x 8=56

so the smallest number is 24.
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