COMEDK2012MathematicsBasics of Mathematics
If 4^ ₉ 3 +9^ ₂ 4 =10^ _ x 83 , then x is equal to
Options
- A10
- B4
- C-10
- D-4
Correct answer
A. 10
Step-by-step solution
We have, 4^ ₉ 3+9^ ₂ 4=10^ _ x 83 4^ 1 2 ₃ 3+9^ 2 ₂ 2=10^ _ x 83 2+81=10^ _ x 83 83=10^ _ x 83 ₁₀ 83= _ x 83 x=10