Variations 4/2

Determine the number of items when the count of variations of fourth class without repeating is 600 times larger than the count of variations of second class without repetition.


n =  27


Solution in text n =

Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):

Showing 0 comments:
1st comment
Be the first to comment!

To solve this example are needed these knowledge from mathematics:

Looking for help with calculating roots of a quadratic equation? Would you like to compute count of combinations? See also our variations calculator.

Next similar examples:

  1. Variations
    pantagram Determine the number of items when the count of variations of fourth class without repeating is 38 times larger than the count of variations of third class without repetition.
  2. Disco
    vencek On the disco goes 12 boys and 15 girls. In how many ways can we select four dancing couples?
  3. Elections
    gaspar_billboard In elections candidate 10 political parties. Calculate how many possible ways can the elections finish, if any two parties will not get the same number of votes.
  4. Variation equation
    fun2_4 Solve combinatorics equation: V(2, x+8)=72
  5. Equation
    calculator_2 Equation ? has one root x1 = 8. Determine the coefficient b and the second root x2.
  6. Roots
    parabola Determine the quadratic equation absolute coefficient q, that the equation has a real double root and the root x calculate: ?
  7. Discriminant
    Quadratic_equation_discriminant Determine the discriminant of the equation: ?
  8. AS sequence
    AP In an arithmetic sequence is given the difference d = -3 and a71 = 455. a) Determine the value of a62 b) Determine the sum of 71 members.
  9. Combinations
    trezor_1 How many elements can form six times more combinations fourth class than combination of the second class?
  10. Combinations
    math_2 From how many elements we can create 990 combinations 2nd class without repeating?
  11. Trinity
    trojka How many different triads can be selected from the group 38 students?
  12. Theorem prove
    thales_1 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?
  13. Equation with abs value
    abs_graph How many solutions has the equation ? in the real numbers?
  14. Quadratic function 2
    parabola1 Which of the points belong function f:y= 2x2- 3x + 1 : A(-2, 15) B (3,10) C (1,4)
  15. Variable
    eq2_12 Find variable P: PP plus P x P plus P = 160
  16. Quadratic equation
    parabola_1 Solve quadratic equation: 2x2-58x+396=0
  17. Sequence 3
    75 Write the first 5 members of an arithmetic sequence: a4=-35, a11=-105.