Three coins are tossed simultaneously what is the probability

Asked by admin @ 20/08/2021 in Math viewed by 278 People

If three coins are tossed simultaneously, then find the probability of getting at least two heads.

(class 10 CBSE SAMPLE PAPER 2017-18 MATHS)

Answered by admin @ 20/08/2021

A coin has two sides head (H) and tail(T).

If we toss three coins then the possible outcomes are as follows:

(H,H,H) (H,H,T),(H,T,H),(T,H,H),(H,T,T),(T,H,T),(T,T,H) & (T,T,T)

SOLUTION:

Number of possible outcomes=8

{(H,H,H) (H,H,T),(H,T,H),(T,H,H),(H,T,T),(T,H,T),(T,T,H) & (T,T,T)}

Number of favourable outcomes (at least 2heads)=4

Probability (at least 2headd)= Number of favourable outcomes/total number of outcomes

Probability(P)(at least 2heads)= 4/8=½

P(at least 2 heads)= ½

Hence, the probability of getting at least 2 heads= ½.

HOPE THIS WILL HELP YOU..

Three coins are tossed simultaneously what is the probability

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