Wipro Company Numerical Ability Probability

An urn contains 6 Red, 4 Blue, 2 Green and 3 Yellow marbles.If two marbles are picked at random, what is the probability that both are Red?
(i) 1/7
(ii) 1/3
(iii) 2/15
(iv) 2/5
(v) None of these

Read Solution (Total 2)

Ans=1/7

Total balls=15
ie.15c2=105
Probability for both red=105/6C2==>1/7
13 years agoHelpfull: Yes(3) No(2)

ans:6c2/15c2=1/7
12 years agoHelpfull: Yes(3) No(1)

Wipro Other Question

Arun speaks truth in 70% of cases while Bhargav speaks truth in 65% of cases.The probability that they will contradict each other on starting the same fact is
a)0.44 b)0.72 c)0.47 d)0.86 A large basket of fruit contains 3 oranges, 2 apples and 5 bananas. If a piece of fruit is chosen at random, what is the probability of getting an orange or a banana?

a)4/5
b)1/2
c)7/10
d)none of these