The digit in the unit’s place of a number is equal to the digit in the ten’s place of half of that number and the digit in the ten’s place of that number is less than the digit in unit’s place of the half of the number by 1. If the sum of the digits of the number is 7, then what is the number? |
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(a) |
34 |
(b) |
52 |
(c) |
162 |
(d) |
Data inadequate |
The digit in the unit’s place of a number is equal to the digit in the ten’s place of half of that number and the digit in the ten’s place of that number is less than the digit in unit’s place of the half of the number by 1. If the sum of the digits of the number is 7, then what is the number? |
|
|||||||
(a) |
34 |
(b) |
52 |
(c) |
162 |
(d) |
Data inadequate |
Let the ten’s digit be and the unit’s digit be
Then,
And
Solving we get
Hence, required number = 52.