What’s the probability of obtains exactly two tails on the tosses?

Question

A penny, a nickel , a dime & a quarter are tossed.

Answer 1

There are 4 tosses total (1 penny, 1 nickel, 1 dime, and 1 quarter).

Each coin has a head on one side and a tail on the other.

There are 2⁴ = 16 possible outcomes to choose from.

HHHH THHH

HHHT THHT

HHTH THTH

HHTT THTT

HTHH TTHH

HTHT TTHT

HTTH TTTH

HTTT TTTT

P(exactly 2 tails in tosses) = 6/16 = 3/8 = 0.375

The probability of obtaining exactly 2 tails in tosses is 0.375.