Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Probability
A glass jar contains 6 white, 8 black, 4 red and 3 blue marbles. If a single marble is chosen at random from the jar, what is the probability that it is black or blue?
1
\(\frac{8}{21}\)
2
\(\frac{11}{21}\)
3
\(\frac{5}{21}\)
4
More than one of the above
5
None of the above