Question

If a coin is tossed for a certain number of times. How many times the coin was tossed, if the probability of getting a head is 0.4 and it appeared up for 24 times?

Answer 1

Given:-

• If a coin is tossed for a certain number of times. The probability of getting a head is 0.4 and it appeared up for 24 times.

To find:-

• Number of times the coin is tossed.

Solution:-

Let,

• the no. of times the coin is tossed be x.

Here,

• Probability of getting a head = 0.4 = 4/10
• No. of times head = 24

According to the question,

→ 4/10 = 24/x

→ x/10 = 24/4

→ x = 6 × 10

→ x = 60

Hence,

• the number of times the coin is tossed is 60.

Answer 2

Probability of an event = No. Of favourable occurrences / Total no. Of occurrences of all possible events Let 'n' be the total no. Of times the coin is tossed. Given probability of success of a head appearing = 0.4 Given the no. Of times 'head' appeared = 24 So, 0.4 = 24 / n n = 24 / 0.4 So, n = 60.