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if x is the addition of the prime numbers between 1 and 6; and y...

Mathematics
JAMB 1988

if x is the addition of the prime numbers between 1 and 6; and y the H.C.F. of 6, 9, 15. Find the product of x and y

  • A. 27
  • B. 30
  • C. 33
  • D. 90
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Correct Answer: Option B
Explanation

Prime numbers between 1 and 6 are 2, 3, and 5

x = 2 + 3 + 5 = 10

H.C.F. of 6, 9, 15 = 3

∴ y = 3

X x Y = 10 x 3 = 30


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