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