Recent questions tagged tifr2012

13 votes
2 answers
32
The probability of throwing six perfect dices and getting six different faces is$1 -\dfrac{ 6!} { 6^{6}}$$\dfrac{6! }{ 6^{6}}$$6^{-6}$$1 - 6^{-6}$None of the above
40 votes
2 answers
33
How many pairs of sets $(A, B)$ are there that satisfy the condition $A, B \subseteq \left\{1, 2,...,5\right\}, A \cap B = \{\}?$$125$$127$$130$$243$$257$