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?
- VCP equation
Solve the following equation with variations, combinations and permutations: 4 V(2,x)-3 C(2,x+ 1) - x P(2) = 0
What is the probability that a random word composed of chars A, H, T, M will be MATH?
- Unknown number
I think number. If subtract from the twelfth square the ninth square I get a number 27 times greater than the intended number. What is this unknown number?
- The confectionery
The confectionery sold 5 kinds of ice cream. In how many ways can I buy 3 kinds if order of ice creams does not matter?
- Linear imaginary equation
Given that ? "this is z star" Find the value of the complex number z.
- 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.
- 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?
Between numbers 1 and 53 insert n members of the arithmetic sequence that its sum is 702.
- Playing cards
How many possible ways are to shuffle 9 playing cards?
How many ways can give away 32 playing cards to 4 player?
How many real roots has equation ? ?
- Variation equation
Solve combinatorics equation: V(2, x+8)=72
What is the vertical asymptote of ?
Determine the quadratic equation absolute coefficient q, that the equation has a real double root and the root x calculate: ?
Equation ? has one root x1 = 8. Determine the coefficient b and the second root x2.
Find the value of the expression: 6!·10^-3