NDA2013MathematicsBasics of MathematicsActual
What is ₈₁ 243 equal to?
Options
- A0.75
- B1.25
- C1.5
- D3
Correct answer
B. 1.25
Step-by-step solution
₈₁ 243= _ (3)^4 (3)^5 From Log properties, _ (b)^y (a)^x= x y _b a Similarly, aligned _ (3)^4 (3)^5 & = 5 4 ₃ 3 & = 5 4 =1.25 aligned