Question

If a pair of coin is tossed 40 times, then one head and one tail occurs 24 times. What is the probability of getting the same result for both the coins?

• A. 0.4
• B. 0.5
• C. 0.6
• D. 0.7

Answer 1

The correct option is A

0.4

Possible outcomes when a pair of coin is tossed are HT or TH or HH or TT;
where, H $\to$ Head and T $\to$ Tail.

Given:
Total number of tosses = 40
Number of times one head or one tail occured = 24

$\therefore$ Number of times in which both the coins have the same outcome(i.e., both the coins turn out to be HH or TT)
= 40 - 24
= 16

So, the probability of getting the same result for both the coins
$=\frac{\text{number of times HH or TT occurs}}{\text{total number of tosses}}=\frac{16}{40}=0.4$