# Elements

If the number of elements is decreased by two the number of permutations is decreased 30 times. How many elements are?

**Result****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:

- Combinations

If the number of elements increase by 3, it increases the number of combinations of the second class of these elements 5 times. How many are the elements? - 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 - Committees

How many different committees of 6 people can be formed from a class of 30 students? - Fish tank

A fish tank at a pet store has 8 zebra fish. In how many different ways can George choose 2 zebra fish to buy? - Calculation of CN

Calculate: ? - 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? - Cards

How many ways can give away 32 playing cards to 4 player? - Seats

Seats in the sport hall are organized so that each subsequent row has five more seats. First has 10 seats. How many seats are: a) in the eighth row b) in the eighteenth row - Cinema 4

In cinema are 1656 seats and in the last row are 105 seats , in each next row 3 seats less. How many are the total rows in cinema? - Intercept with axis

F(x)=log(x+4)-2, what is the x intercept - Asymptote

What is the vertical asymptote of ? - Six terms

Find the first six terms of the sequence a1 = -3, an = 2 * an-1 - Roots

Determine the quadratic equation absolute coefficient q, that the equation has a real double root and the root x calculate: ? - Value

Find the value of the expression: 6!·10^-3