Examples for secondary school students

Number of problems found: 2186

  • Two equations
    children_23 Solve equations (use adding and subtracting of linear equations): -4x+11y=5 6x-11y=-5
  • Combinations
    trezor_1 How many elements can form six times more combinations fourth class than combination of the second class?
  • Q of GP
    geometric_1 Calculate quotient of geometric progression if a1=5 a a1+a2=12.
  • 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):
  • Quadrant
    quadrants In what quadrant is a -1165° angle?
  • 2nd class combinations
    color_circle From how many elements you can create 4560 combinations of the second class?
  • Metals
    metals_2 In the Hockey World Cup play eight teams, determine how many ways can they win gold, silver and bronze medals.
  • Decelleration
    car_2 In a braking test, a vehicle that travels at 51 km/h stops in 5 s. What is the acceleration?
  • Borrowing
    test_5 I borrow 25,000 to 6.9% p.a.. I pay 500 per month. How much will I pay and for how long?
  • AP 6
    progression_ao Calculate the first five items of an arithmetic sequence if it is given: a2 – a3 + a5 = 20 a1 + a6 = 38
  • Chess
    chess How many different ways can initiate a game of chess (first pass)?
  • AVG of INT
    seq_moon What is the average of the integers from 9 throuht 52 inclusive?
  • Insert 6
    seq Insert four harmonic means between 3/7 and 3/19
  • Cancel fractions
    zlomky_15 Compress the expression of factorial: (n+6)!/(n+4)!-n!/(n-2)!
  • Exponential equation
    exp_8 Solve for x: (4^x):0,5=2/64.
  • Linsys2
    linear_eq_3 Solve two equations with two unknowns: 400x+120y=147.2 350x+200y=144
  • The dice
    hracia-kocka What is the probability of events that if we throw a dice is rolled less than 6?
  • Product
    floring The product of two consecutive odd numbers is 8463. What are this numbers?
  • Election 4
    vote_1 In a certain election there are 3 candidates for president 5 for secretory and 2 for tresurer. Find how many ways the election may (turn out/held).
  • Tokens
    kamene In the non-transparent bags are red, white, yellow, blue tokens. We 3times pull one tokens and again returned it, write down all possibilities.

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