If the number of elements is decreased by two the number of permutations is decreased 30 times. How many elements are?
Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):
Showing 0 comments:
Be the first to comment!
To solve this example are needed these knowledge from mathematics:
Next similar examples:
- Permutations without repetition
From how many elements we can create 720 permutations without repetition?
- Three workplaces
How many ways can we divide nine workers into three workplaces if they need four workers in the first workplace, 3 in the second workplace and 2 in the third?
- VCP equation
Solve the following equation with variations, combinations and permutations: 4 V(2,x)-3 C(2,x+ 1) - x P(2) = 0
- Ball game
Richard, Denis and Denise together scored 932 goals. Denis scored 4 goals over Denise but Denis scored 24 goals less than Richard. Determine the number of goals for each player.
- Linear imaginary equation
Given that ? "this is z star" Find the value of the complex number z.
- Theorem prove
We want to prove the sentense: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started?
- Median and modus
Radka made 50 throws with a dice. The table saw fit individual dice's wall frequency: Wall Number: 1 2 3 4 5 6 frequency: 8 7 5 11 6 13 Calculate the modus and median of the wall numbers that Radka fell.
How many ways can give away 32 playing cards to 5 player?
The group has 42 children. There are 4 more boys than girls. How many boys and girls are in the group?
- Solve 3
Solve quadratic equation: (6n+1) (4n-1) = 3n2
- Intercept with axis
F(x)=log(x+4)-2, what is the x intercept
What is the vertical asymptote of ?
- Square root 2
If the square root of 3m2 +22 and -x = 0, and x=7, what is m?
- Difference AP 4
Calculate the difference of the AP if a1 = 0.5, a2 + a3 = -1.1
Solve two equations with two unknowns: 400x+120y=147.2 350x+200y=144
Equation ? has one root x1 = 8. Determine the coefficient b and the second root x2.
Find the value of the expression: 6!·10^-3