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The number 3 divides ‘a’ with a result of ‘b’ and a remainder of 2.

The number 3 divides ‘b’ with a result of 2 and a remainder of 1.

What is the value of a?

  • A.13
  • B.17
  • C.21
  • D.23

Answer: D

Since 3 divides b with a result of 2 and a remainder of 1, b=2×3+1=7.

Since number 3 divides a with a result of b (which we now know equals 7) and a remainder of 2, a=b×3+2=7×3+2= 23.

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