**Problem of the week**** **

Problem of the week

Find the least number whose last digit is 7 and which becomes 5 times
larger when this digit is carried to If a and b are

positive
real numbers such that a+b = 1, prove that,

+≥

Send your solution by 06 Aug 2017 on
pow@madanpur.in

Correct solution received from:

1.

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