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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:
`=(5)/(9)`, =(17)/(18)`
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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?

OSWAL PUBLICATION-PROBABILITY-NCERT CORNER ( Exercise-15.1)
  1. A bag contains 3 red balls and 5 black balls. A ball is drawn at rando...

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  2. A box contains 5 red marbles, 8 white marbles and 4 green marbles. One...

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

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  4. Gopi buys a fish from a shop for his aquarium. The shopkeeper takes...

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  5. A game of chance consists of spinning an arrow which comes to rest poi...

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  6. A dice is thrown once. Find the probability of getting a prime number ...

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  7. A die is thrown once. What is the probability of getting a number l...

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  8. A die is thrown once. find the probability of getting an odd number

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  9. One card is drawn from a well shuffled deck of cards . Find the probab...

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  10. One card is drawn from a well-shuffled deck of 52 cards. Find the prob...

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  11. One card is drawn from a well-shuffled deck of 52 cards. Find the prob...

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  12. One card is drawn from a well-shuffled deck of 52 cards. Find the prob...

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  13. One card is drawn from a well-shuffled deck of 52 cards. Find the prob...

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  14. One card is drawn from a well - shuffled deck of cards . Find the prob...

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  15. Five cards - the ten, jack, queen, king and ace of diamonds, are well-...

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  16. Five cards the ten, jack, queen king and ace of diamonds, are well...

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  17. 12 defective pens are accidentally mixed with 132 good ones. It is ...

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  18. A lot of 20 bulbs contains 4 defective ones. One bulb is drawn at rand...

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  19. (i) A lot of 20 bulbs contain 4 defective ones. One bulb is drawn a...

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  20. A box contains 90 discs which are numbered from 1 to 90. If one disc i...

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