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Divide the L.C.M of 48, 64, and 80 by their H.C.F

Mathematics
JAMB 1986
Divide the L.C.M of 48, 64, and 80 by their H.C.F
  • A. 20
  • B. 30
  • C. 48
  • D. 60
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Correct Answer: Option D
Explanation
48 = 24 x 3, 64 = 26, 80 = 24 x 5

L.C.M = 26 x 3 x 5

H.C.F = 24

\(\frac{2^6 \times 3 \times 5}{2^4}\)

= 22 x 3 x 5

= 4 x 3 x 5

= 12 x 5

= 60
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