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A piggy bank contains hundred 50p coins,...

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

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The correct Answer is:
`(i) 7/25 (ii) 22/25 (iii) 3/5`
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A piggy bank contains hundred 50 paise coins, fifty Rs. 1 coins, twenty Rs. 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, find the probability that the coin which fell will be a 50 paise win will be of value more than Rs. 1 will be of value less than Rs. 5 will be a Rs. 1 or Rs. 2 coin.

Somya's saving purse contains hundred 50 p coins, seventy Rs. 1 coins, fifty Rs. 2 coins and thirty Rs. 5 coins. If it is equally likely that one of the coins will fall out when the purse is turned upside down, then what is the probability that the coin that fell down will be a Rs.1 coins ?

A piggy bank contains only 20 p coins.If the total value of the money is Rs 60 ,find the number of coins in the piggy bank.

A bag contains 3 one Rs coins, 4 five Rs coins and 5 ten Rs coins. How many selection of coins can be formed by taking atleast one coin from the bag

A purse contains 4 copper coins,3 silver coins and the second purse contains 6 copper coins and 2 silver coins.If a coins is taken out ony purse then what is the probability that it is a copper coin.

A bag contains 10 coins of which at least 2 are one-rupee coins. Two coins are drawn and both are found to be not one-rupee coins. What is the probability of the bag to contain exactly 2 one-rupee coins?

A box contains 2 fifty paise coins, 5 twenty five paise coins and a certain fixed number n (ge2) of ten and five paise coins. Five coins are taken out of the box at random. Find the probability that the total value of these 5 coins is less than one rupee and fifty paise.

Vinay has some 50 paise coins , some Rs. 2 coins, some Rs. 1 coins and some Rs. 5 coins .The value of all the coins is Rs. 50 .Number of Rs. 2 coins is 5 more than the Rs. 5 coins .50 paisa coins are double in numbers than the Rs. 1 coins and the number of Rs. 1 coins is 13 . How many Rs. 2 coins does he have ?

Manu's piggy bank contains Rs. 221 in the form of 50 paise, Rs. 1 and Rs. 2 coins in the ratio of 4 :3:6. What is the number of 50 paise coins in the piggy bank?

RS AGGARWAL-PROBABILITY-Exercise 19B
  1. Tickets numbered 2,3,4,5,…,100,101 are placed in a box and mixed thoro...

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  2. (i) A box contins 80 discs, which are numbered from 1 to 80. If one d...

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  3. A piggy bank contains hundred 50p coins, fifty Rs. 1 coins, twenty ? ...

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  4. The probability of selecting a red ball at random from a jar that con...

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  5. A bag contains 18 balls out of which x balls are red. (i) If one bal...

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  6. A jar contains 24 marbles. Some of these are green and others are blu...

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  7. A jar contains 54 marbles each of which is blue, green or white. The ...

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  8. A carton consists of 100 shirts of which 88 are good and 8 have minor ...

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  9. A group of 12 persons, of which 3 are extremely patient, other 6 are e...

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  10. A die is relled twice. Find the probability that 5 will come up both t...

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  11. Two dice are rolled once. Find the probability of getting such number...

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  12. A letter is chosen at random from the letters of the word 'ASSOCIATIO...

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  13. Five cards- the tan, jack, queen, king and ace of diamonds are well sh...

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  14. A card is drawn at random from a well shuffled pack of 52 cards. Find ...

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  15. What is the probability that on ordinary year has 53 Mondays?

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  16. All red face cards are removed from a pack of playing cards. The re...

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  17. All kings, queens are aces are removed from a pack of 52 cards. The ...

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  18. A game consists of tossing a one-rupee coin three times, and noting it...

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  19. Find the probability that a leap year selected at random will contain ...

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  20. The probability of selecting a rotten apple randomly from a heap of 90...

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