• The learning process is entertaining and exciting
  • The solved tasks turn into coordinates
  • The chance to follow your progress
  • Along with your schoolmates and friends, go on an adventure, searching for hideouts
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2576.1. Probability

Write the correct answer!

Given a card deck with 52 cards. What is the probability to pull out a red card? The obtained fractional number do not round it!
What is the probability that it will be a diamond?
What is the probability that it will be a king?
Combinatorics, probability theory elements

Solve tasks to find hidden Geo point coordinates

  1. Algebra: Inequality systems
  2. Geometry: peak, edge, face, prism (straight and regular) pyramid (also regular), cylinder, cone, sphere.
  3. Algebra: Equation with two unknowns (either 1 or 2 degree)
  4. Algebra: Variation, combination
  5. Algebra: Quadratic function y = ax² + bx + c concept
  6. Physics: Electrical circuit characteristics and Ohms law in circuit.
  7. Algebra: Fraction inequalities
  8. Chemistry: Hydrocarbon combustion. Calculations with chemical reaction equations.
  9. Algebra: Combinatorics
  10. Geometry: Regular polygon, perimeter and area. Regular polygon indrawn circle, regular polygon indrawn in a circle.