• 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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2569.2. Probability

Write the correct answer!

In bag there are several equal size balls - 5 blue and 7 yellow.
What is the probability to pull out the blue ball (without looking in the bag)?
What is the probability to pull out the yellow ball?
Combinatorics, probability theory elements

Solve tasks to find hidden Geo point coordinates

  1. Physics: Simple mechanisms.
  2. Physics: The transformation of energy.
  3. Algebra: Combinatorics
  4. Chemistry: Substance transformation. Chemical reaction types.
  5. Physics: The transformation of energy.
  6. Geometry: Triangle, parallelogram, rhombus area formulas, through narrow angle sine value.
  7. Physics: Labour and energy.
  8. Physics: Energy usage in life.
  9. Chemistry: Natural substances and products.
  10. Geometry: Circumference length, arc length.
  11. Geometry: Fixture surface area, surface layout, figure volume.
  12. Geometry: Prism, pyramid, cylinder, cone height, basis. Cylinder and cone generatrix.
  13. Algebra: Probability
  14. Physics: Labour and energy.
  15. Algebra: Variation, combination
  16. Physics: Electrical circuit characteristics and Ohms law in circuit.
  17. Algebra: Difference
  18. Algebra: Quotient
  19. Physics: Electrification of a body and interaction of bodies electrification.
  20. Algebra: Numerical chain concept
  21. Algebra: Quadratic equation solution
  22. Physics: Different electromagnetic wave usage.
  23. Physics: Electromagnetic wave formation and spread.
  24. Geometry: Regular polygon, its perimeter and area. Regular polygon indrawn circumference, circumference drawn around regular polygon.
  25. Physics: Types of information transmission.
  26. Chemistry: Calculations by chemical reactions.
  27. Geometry:
  28. Physics: Different electromagnetic wave usage.
  29. Chemistry: Metal chemical properties.
  30. Chemistry: Substance transformation. Chemical reaction types.
  31. Algebra: Function concept recess: growth-decrease; biggest-smallest value;value interval.
  32. Algebra: Equation with two unknowns (either 1 or 2 degree)
  33. Geometry:
  34. Algebra: Operation with algebraic fractions
  35. Physics: Universe research methodes.
  36. Algebra: Concept of equation system
  37. Chemistry: Substance classification.
  38. Physics: Processes in stars.
  39. Geometry: Line segment ratio.
  40. Geometry: peak, edge, face, prism (straight and regular) pyramid (also regular), cylinder, cone, sphere.
  41. Physics: The development of transport
  42. Physics: Universe structure.