Question : The LCM of two prime numbers x and y (x > y) is 533. The value of 4y – x is:
Option 1: 18
Option 2: 11
Option 3: 23
Option 4: 21
Correct Answer: 11
Solution :
533 = 13 × 41
So, x = 41 and y = 13 (Since x and y are prime numbers)
Now, (4y − x) = (4 × 13 – 41) = 11
Hence, the correct answer is 11.
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