A two-digit number is such that the product of its digits is 8. When 18 is added to the number, the digits are reversed. The number is:

Correct answer: 24

Solution

Let the number be \(10x+y\). Since adding 18 reverses the digits, \(10x+y+18=10y+x\), which gives \(x-y=-2\) or \(y=x+2\). Using \(xy=8\), we get \(x=2\), \(y=4\), so the number is 24.

Related IBPS PO Quantitative Aptitude questions

A set of five two-digit integers is given. The average of the first and last numbers is the middle number. The second number is half of the first number. The sum of the first three numbers is 127. The middle number is (A) and the average of the five numbers is (B). The fourth number is 62. What can be the values of (A) and (B), respectively?
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