Accenture
Company
Numerical Ability
Probability
A box contains 6 black and 4 white socks. A man takes out two socks. The probability that they are of the same color is:
A)5/18 B)3/5 C)4/9 D)7/15
Read Solution (Total 5)
-
- 4c2/10c2+(6c2/10c2)=7/15
- 4 years agoHelpfull: Yes(1) No(0)
- speed of car = x
speed of train = 6x/5 - 4 years agoHelpfull: Yes(0) No(1)
- speed of car = x
speed of train = 6x/5 - 4 years agoHelpfull: Yes(0) No(1)
- For Black
1st time = 6/0
2nd time 5/9
For Black
1st time = 6/0
2nd time 5/9
For Black
1st time = 6/0
2nd time 5/9
For Black
1st time = 6/0
2nd time 5/9
For Black
1st time = 6/0
2nd time 5/9
For Black
1st time = 6/0
2nd time 5/9
For White
1st time = 4/10
2nd time = 3/9
6/10*5/9 + 4/10*3/9
=7/15 - 3 years agoHelpfull: Yes(0) No(0)
- The same colour of black socks = 6c2 * 4c0 = 15
The same colour of white socks = 6c0 * 4c2 = 6
Total = 21
sample space (S) = 10 (6+4)
Probability = 21/ 10c2
= 21 / 45
= 7/15 - 5 Months agoHelpfull: Yes(0) No(0)
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