3x - 3x - 1 = 486, Find x
A. 7
B. 9
C. 5
D. 6
Answer: Option D
Solution (By Examveda Team)
3x - 3x - 1 = 486⇒ 3x - 1(3 - 1) = 486
⇒ 3x - 1 = 243
⇒ 3x - 1 = 35
⇒ x = 6
This Question Belongs to Arithmetic Ability >> Surds And Indices
⇒ 3x - 1(3 - 1) = 486
⇒ 3x - 1 = 243
⇒ 3x - 1 = 35
⇒ x = 6
Related Questions on Surds and Indices
A. $$\frac{1}{2}$$
B. 1
C. 2
D. $$\frac{7}{2}$$
Given that 100.48 = x, 100.70 = y and xz = y2, then the value of z is close to:
A. 1.45
B. 1.88
C. 2.9
D. 3.7
Join The Discussion