Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Probability
What is the probability that a two-digit number chosen at random number is not a prime number?
1
21/90
2
23/30
3
67/90
4
More than one of the above
5
None of the above