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A piggy bank contains hundred 50 paise c...

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 (i) will be a 50 paise coin (ii) will be of value more than Rs. 1 (iii) will be of value less than Rs. 5 (iv) will be a Rs. 1 or Rs. 2 coin.

A

`9/5" "1/6" "5/8" "11/18`

B

`7/18" "3/8" "5/7" "12/18`

C

`1/6" "7/18" "3/8" "13/18`

D

`5/9" "1/6" "17/18" "7/18`

Text Solution

Verified by Experts

The correct Answer is:
D
given that , 100 coins of `50 paise`
50 coins of `1 re`
20 coins of `rs 2`
10 coins of `rs 5`
let event e be that coin 50 paise will fall out``
`P(e)= 100/180 = 5/9`
(ii) let event g b the event of rs 5
we have to find `g'`
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