Find the number

The sum of the digits of a three digit number is 2. After adding 10 to the number the sum of the first two

digits become 2. Please find the number.
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1 Answer

The sum of the digits of a three digit number is 2. After adding 10 to the number the sum of the first two digits become 2. Please find the number.

There are only three three-digit numbers that satisfy the 1st condition.

These are,

110

101

200

Now add 10 to each possible number.

110 + 10 = 120   (sum of 1st 2 digits = 3)

101+ 10 = 110   (sum of 1st 2 digits = 2)

200+ 10 = 210   (sum of 1st 2 digits = 3)

So, the number is: 101

by Level 11 User (81.5k points)

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