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If 3/20 = 1/10+1/20

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October 3, 2014 by Rajshree goel 6 Comments

Number Puzzle #121

Number-puzzle-121

Number Puzzle #121

If 3/20=1/10+1/20

3/5=1/5+1/5+1/5

Then, 7/10=????

Click here to See Answer with explanationHide
Ans.7/10=1/5+1/2
How?
Trick is to make dividend as 1. so we should try to write 7/10 as 1/x + 1/y + 1/z …..

we can easily see that x = 5, y = 2 will be enough.

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