JEE Main & Advanced
Mathematics
Probability
Question Bank
Self Evaluation Test - Probability-I
question_answer
Two numbers are successively drawn from the set\[U=\{1,2,3,4,5,6,7,8\}\], the second being drawn without replacing the first. The number of elementary events in the sample is:
A)64
B)56
C)32
D)14
Correct Answer:
B
Solution :
[b] Required no. of elementary events \[{{=}^{8}}{{C}_{2}}\times 2!=56\]