An urn contains 6 red, 5 blue and 2 green marbles. If 2 marbles are picked at random, what is the probability that both are red?
A. $$\frac{6}{{13}}$$
B. $$\frac{{5}}{{26}}$$
C. $$\frac{{5}}{{13}}$$
D. $$\frac{{7}}{{26}}$$
Answer: Option B
Solution (By Examveda Team)
P(Both are red),$$\eqalign{ & = \frac{{^6{C_2}}}{{^{13}{C_2}}} \cr & = \frac{5}{{26}} \cr} $$
This Question Belongs to Arithmetic Ability >> Probability
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