IBPS PO Quantitative Aptitude: Number Systems questions with solutions

Q1. Direction: The following questions are based on the five three-digit numbers given below. 834 967 396 625 483 If 2 is added to the last digit of each number and then the positions of the first and the second digits are interchanged, which of the following will be the highest number?

1. 396
2. 625
3. 967
4. 834

Answer: 396

Step 1 — add 2 to last digit: 834→836, 967→969, 396→398, 625→627, 483→485. Step 2 — interchange first and second digits: 836→386, 969→699, 398→938, 627→267, 485→845. Largest result is 938, which came from original number 396.