Others Maths Puzzle Numerical Ability Algebra

: FIND THE VALUE OF X here?
(2/7)^-8*(7/2)^-2=(2/7)^X
Op 1: 3
Op 2: -3
Op 3: -6
Op 4: 2

Read Solution (Total 2)

Option 3) -6

(2/7)^-8 * (7/2)^-2 = (2/7)^X
(2/7)^-8 * (2/7)^2 = (2/7)^X
(2/7)^-6 = (2/7)^X
=> X = -6
6 years agoHelpfull: Yes(1) No(1)

-3 solve it correcly
5 years agoHelpfull: Yes(0) No(0)

Others Other Question

The probability of having at least one tail in 5 throws of a coin is
Option 1 : 1/32 Option 2 : 31/32 Option 3 : 1/5 Option 4 : None of these Ritu visited a mall where tokens are given while submitting the belongings at the entrance. Token are numbered from a, b, c, d ...... z. Guard gives the token at random. What is the probability that token given to Ritu is a consonant?
Op 1: 5/21
Op 2: 21/26
Op 3: 5/26
Op 4: 26/21