if nidhi has 2 coin of rs.5.1 coin or Rs.2 and 1 coin of rs 1 . which of the following item can she buy? a. pen whith rate of rs. 14. b. eraser whith rate rs. 4 . c.rular whith rate rs.9 d . glue whith rate rs .18
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Answer:
Total no. of coins in the piggy is 180
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A piggy bank contains a 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 fewill be a 50 paise win (ii) will be of value more than Rs. 1 (iii) will be of value less than Rs. 5 (iv) will be Rs. 1 or Rs. 2 coin
ANSWER:-
No. of 50p coins in piggy is 100
Let E be the event of drawing a coin from piggy
We know that, Probability P(E) =
(Total no.of possible outcomes)
(No.of favorable outcomes)
=
180
100
=
9
5
Therefore,Probability that a 50p coin wins =
9
5