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RBI Assistant Model Paper 7
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© examsnet.com
Question : 47
Total: 100
A bag Contain 10 two-rupee coins, 5 ten-rupee coins and 7 one-rupee coins, If 3 Coins are withdraw at random find the probability of getting minimum amount.
1
50
1
22
1
66
1
44
1
33
Validate
Solution:
Minimum amount will be when all coins are one - rupee coin
Required probability =
7
C
3
22
C
3
=
7
×
6
×
5
22
×
21
×
20
=
1
44
© examsnet.com
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