38.9 coins are tossed simultaneously, what is the probability of having more number of heads than tails?

(a) 7/11

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(b) 1/4

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(d) none of these

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Solution

The correct option is D (d) none of these
Ans38: (d) Sol: Probability of getting more number of heads will be the same as getting more number of tails. Both will be equally likely irrespective of the number of coins used. Thus the probability will always be ½.

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Q. Three coins are tossed simultaneously

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one head

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two heads

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if the three coins are simultaneously tossed again,compute the probability of: (1).

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heads coming up. (3). at least one head coming up. (4).getting more heads than tails. (5). getting more tails than heads.

What is the probability of getting all heads or all tails, when three coins are tossed simultaneously?

Three similar coins were tossed simultaneously for 100 times and the data recorded is as given below :

$\begin{matrix} No of heads & 0 & 1 & 2 & 3 No of tosses = Frequency & 10 & 35 & 40 & 15 \end{matrix}$

(i) What is the probability of getting more tails than heads?
(ii) What is the probability of getting more heads than tails?
(iii) Are (i) and (ii) complementary? Will they be complementary if we had 4 coins? [4 MARKS]

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38.9 coins are tossed simultaneously, what is the probability of having more number of heads than tails?

The correct option is D (d) none of theseAns38: (d) Sol: Probability of getting more number of heads will be the same as getting more number of tails. Both will be equally likely irrespective of the number of coins used. Thus the probability will always be ½.

The correct option is D (d) none of these
Ans38: (d) Sol: Probability of getting more number of heads will be the same as getting more number of tails. Both will be equally likely irrespective of the number of coins used. Thus the probability will always be ½.