There are only three varities of ice creams in Jokaland priced at Rs 5,Rs 10 and Rs 15.If, Arun buys 4 ice creams for Rs 45 from Jokaland, then what is the probability that any two of them together will cost exactly Rs 20 ?
A.1/2
B.1/4
C.3/4
D.3/8
E.5/12
Answer and my explanation after discussion.
Probability-Ice cream
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is answer E: 5/12?
Only two comibination of 4 ice cream for Rs.45 are possible
i) 5,10,15,15
ii) 10,10,10,15
i)5,10,15,15
total 6 combination possible. two combinations give 20
ii) 10,10,10,15
total 6 combination possible. three combinations give 20
Total desired combinations=5
Total combinations=12
prob=5/12
pls tell if it's correct
Only two comibination of 4 ice cream for Rs.45 are possible
i) 5,10,15,15
ii) 10,10,10,15
i)5,10,15,15
total 6 combination possible. two combinations give 20
ii) 10,10,10,15
total 6 combination possible. three combinations give 20
Total desired combinations=5
Total combinations=12
prob=5/12
pls tell if it's correct
sulabh, u wrote:
i)5,10,15,15
total 6 combination possible. 3 combinations give 20
pls show three combinations which give 20.
i can only count 2 combinations. 1)5,15 2)5,15.
what's the third combination which gives 20?
If OA 1/2, then there must be some other approach to this. What's the OA?
i)5,10,15,15
total 6 combination possible. 3 combinations give 20
pls show three combinations which give 20.
i can only count 2 combinations. 1)5,15 2)5,15.
what's the third combination which gives 20?
If OA 1/2, then there must be some other approach to this. What's the OA?
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Did you make up this question, sulabh? If so, I have some questions for you.sulabh wrote:There are only three varities of ice creams in Jokaland priced at Rs 5,Rs 10 and Rs 15.If, Arun buys 4 ice creams for Rs 45 from Jokaland, then what is the probability that any two of them together will cost exactly Rs 20 ?
A.1/2
B.1/4
C.3/4
D.3/8
E.5/12
Answer and my explanation after discussion.