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A piggy bank contains hundred 50p coins, fifty c 1 coins, twen

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A piggy bank contains hundred $50 p$ coins, fifty c $1$ coins, twenty c $2$ coins and ten c $5$ 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 c $5$ coin?

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Liam Discussed

A piggy bank contains hundred

50 p

coins, fifty c

1

coins, twenty c

2

coins and ten c

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 c

5

coin?

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Text solutionVerified

Total number of coins in the piggy bank

= 100 + 50 + 20 + 10 = 180.

50 p

coin)

= \frac{number of 50p coins}{total number of coins}

= \frac{100}{180}

50 p

coin)

= \frac{5}{9}

ii)

Number of

c

5

coins

= 10

Number of coins which are not

c

5 = 170

P(coin not being

c 5

)

= \frac{170}{180} = \frac{17}{18}

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Question Text	A piggy bank contains hundred $50 p$ coins, fifty c $1$ coins, twenty c $2$ coins and ten c $5$ 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 c $5$ coin?
Answer Type	Text solution:1
Upvotes	150

A piggy bank contains hundred 50p coins, fifty c 1 coins, twenty c 2 coins and ten c 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 50p coin ? (ii) will not be a c 5 coin?

Text solutionVerified

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A piggy bank contains hundred $50 p$ coins, fifty c $1$ coins, twenty c $2$ coins and ten c $5$ 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 c $5$ coin?