Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Probability
A bag contains 7 blue, 4 red, 6 black and 3 white balls. A ball is drawn from this bag, without looking into it. Then, probability of getting a black or a blue ball is :
1
\(\frac{10}{20}\)
2
\(\frac{11}{20}\)
3
\(\frac{13}{20}\)
4
More than one of the above
5
None of the above