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10, 25, 45, 54, 60, 75, 80


10, 25, 45, 54, 60, 75, 80

A. 10 B. 45
C. 54 D. 75























Answer: Option C

Explanation:

Each of the numbers except 54 is multiple of 5.

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It takes 10 days for digging a trench of 100 m long, 50 m broad and 10 m deep. What length of trench, 25 m broad and 15 m deep can be dug in 30 days ?

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