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Q: The LCM of 4, 6 and x CANNOT be:
  • A. 24
  • B. 18
  • C. 36
  • D. 60
Correct Answer: Option B - L.C.M of 4, 6 and x = 12x So, it is clear that the L.C.M of 4, 6 and x will be a multiple of 12. The number given in option (b) is not a multiple of 12. Hence, L.C.M of 4,6 and x can't be 18.
B. L.C.M of 4, 6 and x = 12x So, it is clear that the L.C.M of 4, 6 and x will be a multiple of 12. The number given in option (b) is not a multiple of 12. Hence, L.C.M of 4,6 and x can't be 18.

Explanations:

L.C.M of 4, 6 and x = 12x So, it is clear that the L.C.M of 4, 6 and x will be a multiple of 12. The number given in option (b) is not a multiple of 12. Hence, L.C.M of 4,6 and x can't be 18.