Question

In a piggy bank, there are 10 one rupee coins, 20 two rupees coins and 15 five rupees coins. If you take out one coin at a time, find the probability of getting a two rupees coin.

Answer 1

Step-by-step explanation:

number of 1 rupee coins=10

number of 2 rupee coins=20

number of 5 rupee coins=15

total number of coins= 10+20+15=45

$probability=\frac{number of favorable outcomes}{total number of outcomes}$

probability = 20/45               [on reducing]

probability = 4/9

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Answer 2

Answer:

Probability of an event is defined as the ratio of favorable outcomes to the total outcomes.

(i) Probability that the fallen coin is Rs. 2 coin is the ratio of number of Rs. 2 coins and total number of coins.

P

2

=

100+25+15+10

25

=

6

1

(ii) Probability that the fallen coin is Rs. 5 coin is the ratio of number of Rs. 5 coins and total number of coins.

P

5

=

100+25+15+10

15

=

10

1