The number 3 divides 'a' with a result of 'b' and a reminder of 2. The number 3 divides 'b' with a result of 2 and 'a' reminder of 1. What is the value of 'a'?

A 13

B 17

C 23

D 21

Solution

Correct Answer: Option C

এখানে, a = 3b + 2
এবং b = 3 Χ 2 + 1
         = 6 + 1
          = 7 

∴ a = (3 Χ 7) + 2
      = 21 + 2
      = 23

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