JEE Main 2019 — Math solution | Fundamenthol

JEE Main2019Math

Q.

In a random experiment, a fair die is rolled until two fours are obtained in succession. The probability that the experiment will end in the fifth throw of the die is equal to :

A
$\frac{150}{6 ^{5}}$
B
$\frac{225}{6 ^{5}}$
C
$\frac{175}{6 ^{5}}$
D
$\frac{200}{6 ^{5}}$

Solution

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