Combinatorial number - examples - page 4
How many elements can form six times more combinations fourth class than combination of the second class?
We throw five times the dice. What is the probability that six fits exactly twice?
There are 200 draws in the raffle, but only 20 of them win. What is the probability of at least 4 winnings for a group of people who have bought 5 tickets together?
The teacher prepared a test with ten questions. The student has the option to choose one correct answer from the four (A, B, C, D). The student did not get a written exam at all. What is the probability that: a) He answers half correctly. b) He answers.
How many 19 element's subsets can be made from the 26 element set?
- Combinations 6
6 purses 9 flaps 12 straps Every combination must include 1 purse, 1 flap and 1 strap. How many possible combinations?
- Find the 2
Find the term independent of x in the expansion of (4x3+1/2x)8
See also our combinations calculator.