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Question : Find the least number which when divided by 12, 18, 24, and 30 leaves 4 as remainder in each case, but when divided by 7 leaves no remainder.

Option 1: 366

Option 2: 364

Option 3: 384

Option 4: 634


Team Careers360 8th Jan, 2024
Answer (1)
Team Careers360 22nd Jan, 2024

Correct Answer: 364


Solution : Given: The least number which when divided by 12, 18, 24, and 30 leaves 4 as remainder in each case, but when divided by 7 leaves no remainder.
The Least Common Multiple (LCM) of such numbers is the least number that may be divided by multiple numbers.
The least number that is divisible by 12, 18, 24, and 30 = LCM of 12, 18, 24, and 30 = 360.
⇒ The least number when divided by 12, 18, 24, and 30, leaves a remainder of 4 = 360 + 4 = 364.
Also, 364 is divisible by 7.
Hence, the correct answer is 364.

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