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Question

If A=2^i3^j+5^kB=3^i+5^k and C=3^i2^j, then A2B+3C is
  1. ^i9^j5^k
  2. ^i9^j5^k 
  3. ^i+9^j5^k
  4. ^i9^j+5^k


Solution

The correct option is A ^i9^j5^k
Given, A=2^i3^j+5^kB=3^i+5^k and C=3^i2^j
So, A2B+3C=(2^i3^j+5^k)2(3^i+5^k)+3(3^i2^j)
 (^i9^j5^k)

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