There are 4 possible letters to start with.
The pass word is 3 letters long.
The first letter can be A, B, C, D = 4 different letters.
The 2nd letter can be 4 - 1 = 3 letters ( Can't have repeats)
The 3rd letter can be 3-1 = 2 letters ( no repeats)
Number of possible passwords = 4 x 3 x 2 = 24
Answer:
When m = 6, 5m - 4 = 26.
Step-by-step explanation:
Substitute:
Multiply:
Subtract:
When m = 6, 5m - 4 = 26.
Answer:
the last one
Step-by-step explanation:
plug in -2 for x and -3 for y
Answer:
40%
Step-by-step explanation:
2/5 as a decimal is 0.4, and 0.4 as a percentage is 40% hope this helped!
Step-by-step explanation:
- To find the E(X) expected value, you come up with the different probabilities for each outcome
- your set of outcomes after 3 tosses would be = {HHH, HHT, HTH, THH, HTT, THT, TTH, TTT} where H is heads and T is tails
- Each element has a probability of 1/8 so let x represent number of tails
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- The E(x)=Summation (x times P(x))
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- Now which probability is 1.5 tails? None, so it is either 2 tails or 1 tails
- So you can expect to lose money in 1 game
- But as you play more games the probability of getting 3 tails becomes more and more likely, so you can expect to win in a 100 games