if q is a whole number and q is a prime, and if 20q is divisible by 6, then q could be | MathCelebrity Forum

if q is a whole number and q is a prime, and if 20q is divisible by 6, then q could be

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A. 2
B. 3
C. 4
D. 5
E. 6

We have 3 conditions that all must be met:
  1. Whole number
  2. Prime Number
  3. 20 * number is divisible by 6
  • The are all whole numbers
  • One A, B, and D are prime, so we eliminate C and E
  • 20(2) = 40 which is not divisible by 6 - Eliminate Answer A
  • 20(5) = 100 which is not divisible by 6- Eliminate Answer D
  • 20(3) = 60/6 = 10. Our answer is B
 
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