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Question from sanjeev, a parent:

The tens digit of a number is five times the unit digit. Find the number?

Hi,

I assume you are looking for a two digit number.

Suppose the units digit is 0. What is the tens digit?
Suppose the units digit is 1. What is the tens digit?
Suppose the units digit is 2. What is the tens digit?
Suppose the units digit is 3. What is the tens digit?
.
.
.

Penny

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