#
Three coins are tossed simultaneously 200

times with the following frequencies of

different outcomes

Outcomes

Frequency

3 heads

23

2 heads

72

1 head

77

Fi

No head

28

stu

Find the experimental probability of getting

(i) atmost 2 heads (ii) at least 2 heads

(CBSE 2016)

## Answers

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1

**Answer:**

(i) 177/200 (ii) 19/40

**Step-by-step explanation:**

(i) Favourable outcomes = 72+77+28=177

Total outcomes = 200

P( atmost 2 heads) = 177/ 200

(ii) Favourable outcomes = 72+23=95

Total outcomes = 200

P(atleast 2 heads) = 95/200

= 19/40

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