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.

Result

n =  27

Solution:

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!
avatar




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. Disco
    vencek On the disco goes 12 boys and 15 girls. In how many ways can we select four dancing couples?
  2. 2nd class variations
    cards From how many elements you can create 6972 variations of the second class?
  3. Variation equation
    fun2_4 Solve combinatorics equation: V(2, x+8)=72
  4. Equation
    calculator_2 Equation ? has one root x1 = 8. Determine the coefficient b and the second root x2.
  5. Roots
    parabola Determine the quadratic equation absolute coefficient q, that the equation has a real double root and the root x calculate: ?
  6. Discriminant
    Quadratic_equation_discriminant Determine the discriminant of the equation: ?
  7. Combinations
    trezor_1 How many elements can form six times more combinations fourth class than combination of the second class?
  8. Combinations
    math_2 From how many elements we can create 990 combinations 2nd class without repeating?
  9. Trinity
    trojka How many different triads can be selected from the group 38 students?
  10. Calculation of CN
    color_combinations Calculate: ?
  11. 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?
  12. Sequence
    sunflower Between numbers 1 and 53 insert n members of the arithmetic sequence that its sum is 702.
  13. Quadratic equation
    Parabola_tangent Quadratic equation ? has roots x1 = 80 and x2 = 78. Calculate the coefficients b and c.
  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. Quadratic inequation
    eq2_8 If 5x + x² > 100, then x is not
  16. Six terms
    sequence_geo_3 Find the first six terms of the sequence a1 = -3, an = 2 * an-1
  17. Calculation
    pocty How much is sum of square root of six and the square root of 225?