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Question : When 2388, 4309, and 8151 are divided by a certain 3-digit number, the remainder in each case is the same. The remainder is:

Option 1: 23

Option 2: 19

Option 3: 39

Option 4: 15


Team Careers360 2nd Jan, 2024
Answer (1)
Team Careers360 23rd Jan, 2024

Correct Answer: 15


Solution : According to the question,
4309 – 2388 = 1921
8151 – 4309 = 3842
8151 – 2388 = 5763
HCF of 1921, 3842 and 5763 = 1921
1921 = 17 × 113
Thus, the three-digit number is 113.
When 2388, 4309, and 8151 are divided by 113, the remainder is 15 in each case.
Hence, the correct answer is 15.

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