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A piggy bank contains hundred 50p coins, fifty Rs. 1 coins, tw

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A piggy bank contains hundred 50p coins, fifty Rs. 1 coins, twenty ? 2 coins and ten Rs. 5 coins. If it is equally likely that one of the coins will fall out when the bank is turned upside down, what is the probability that the coin (i) will be a 50 p coin? (ii) will not be a Rs. 5 coin?

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A piggy bank contains hundred 50p coins, fifty Rs. 1 coins, twenty ? 2 coins and ten Rs. 5 coins. If it is equally likely that one of the coins will fall out when the bank is turned upside down, what is the probability that the coin (i) will be a 50 p coin? (ii) will not be a Rs. 5 coin?

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Solution: given that , 100 coins of

50 p a i s e

50 coins of

1 r e

20 coins of

r s 2

10 coins of

r s 5

let event e be that coin 50 paise will fall out

P (e) = \frac{100}{180} = \frac{5}{9}

(ii) let event g b the event of rs 5
we have to find

g^{'}

P (g^{'}) = 1 - P (g) = 1 - \frac{10}{180} = 1 - \frac{1}{18}

= \frac{17}{18}

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Question Text	A piggy bank contains hundred 50p coins, fifty Rs. 1 coins, twenty ? 2 coins and ten Rs. 5 coins. If it is equally likely that one of the coins will fall out when the bank is turned upside down, what is the probability that the coin (i) will be a 50 p coin? (ii) will not be a Rs. 5 coin?
Answer Type	Text solution:1
Upvotes	150

A piggy bank contains hundred 50p coins, fifty Rs. 1 coins, twenty ? 2 coins and ten Rs. 5 coins. If it is equally likely that one of the coins will fall out when the bank is turned upside down, what is the probability that the coin (i) will be a 50 p coin? (ii) will not be a Rs. 5 coin?

Text solutionVerified

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