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Question

If 4n+1.2n8n22n=38, then n=
  1. 1
  2. 3
  3. 2
  4. 4

A
3
B
1
C
2
D
4
Solution
Verified by Toppr

4n+1.2n8n22n=38

Let 2n=t

4.4n.2n(23)n(2n)2=38

4.t3t3t2=38

3t=38t=232n=23

n=3

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