Sets - math problems

Number of problems found: 112

  • Subtracting sets
    venn_intersect For two sets K, L is true: K has 30 elements, L has 27 elements and the set L - K has 22 elements. How many elements does the set K - L have?
  • Two sets
    venn_intersect Suppose Set B contains 69 elements and the total number elements in either Set A or Set B is 124. If the Sets A and B have 29 elements in common, how many elements are contained in set A?
  • Disjoint
    sets How many elements have union and intersection of two disjoint sets when the first have 1 and secodn 8 elements.
  • Operations with sets
    venn5 The set B - A has twice as fewer elements than the set A - B and four times fewer elements than the set A ∩ B. How many times more elements does the set A have than the set B?
  • C(6,3)
    combinatorics C(6,3) + 3 P(6,3)
  • Median or middle
    Median2 The number of hours of television watched per day by a sample of 28 people is given below: 4, 1, 5, 5, 2, 5, 4, 4, 2, 3, 6, 8, 3, 5, 2, 0, 3, 5, 9, 4, 5, 2, 1, 3, 4, 7, 2, 9 What is the median value?
  • Intersect and conjuction
    venn_intersect Let U={1,2,3,4,5,6} A={1,3,5} B={2,4,6} C={3,6} Find the following. 1. )AUB 2. )A'UB'
  • Probabilities
    Venn_diagram If probabilities of A, B and A ∩ B are P (A) = 0.62 P (B) = 0.78 and P (A ∩ B) = 0.26 calculate the following probability (of union. intersect and opposite and its combinations):
  • Intersections 3
    intersect_circles Find the intersections of the circles x2 + y2 + 6 x - 10 y + 9 = 0 and x2 + y2 + 18 x + 4 y + 21 = 0
  • TVs
    tv Production of television sets increased from 3,500 units to 4,200 units. Calculate the percentage of production increase.
  • Marriage sttus
    family In our city, there are 3/5 of the women married to 2/3 of the men. Find what part of the population is free.
  • Subsets
    venn5 How many 19 element's subsets can be made from the 26 element set?
  • Dices throws
    dices What is the probability that the two throws of the dice: a) Six falls even once b) Six will fall at least once
  • Glasses
    class Imagine a set of students in your class (number of students: 19), who wears glasses. How much minimum and maximum element may contain this set.
  • Raffle
    tombola There are 200 draws in the raffle, but only 20 of them win. What is the probability of at least 4 winnings for a group of people who have bought 5 tickets together?
  • Classroom 3
    kids How many children are in the classroom, where 13 children are higher than Lenka and 9 children lower than Lenka?
  • Count of roots
    eggs How many solutions has equation x. y = 7757 with two unknowns on the set of natural numbers?
  • Coloured teacups
    venn The teacups in Tea Stop 55 are `2/5` green and `3/10` yellow. What fraction of the teacups are neither green nor yellow?
  • Pizza master
    pizza Master says that he can splits pizza to 16 parts by five equals straight cuts. Is it possible?
  • Subsets
    1venna_sets How many are all subsets of set C = (97, 67, 66, 18, 59, 64)?

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