KAPEC GEOTASK?
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  • 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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2600.3. Combinatorics

Write the correct answer!

How many three-digit positive even numbers there may be that ar less than 170? For calculations let's use combinatorics!
How many different first numbers (hundreds) there may be that will correspond to the task conditions?
How many different second numbers (tens) there may be that will correspond to the task conditions?
Write these numbers ascending! (Write one after another, with no spaces separating them with ; for example: ∎;∎;∎;∎;∎)
How many different third numbers (ones) there may be that will correspond to this conditions?
How many three-digit positive even numbers can you make so they are less than 150?
Grade:
9
Subject
Algebra
Theme
Combinatorics, probability theory elements
Subtheme
Combinatorics

Solve tasks to find hidden Geo point coordinates

  1. Physics: Electrosafety.
  2. Algebra: Function concept recess: Function root; growth-decrease; biggest-smallest value; value interval.
  3. Algebra: Function concept recess: growth-decrease; biggest-smallest value;value interval.
  4. Algebra: Equation with two unknowns (either 1 or 2 degree)
  5. Physics: Elements in suns system.
  6. Algebra: Function concept recess: growth-decrease; biggest-smallest value;value interval.
  7. Algebra: Difference
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  9. Chemistry: Calculations by chemical reactions.
  10. Geometry:
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  12. Algebra: Quadratic function y = ax² + bx + c concept
  13. Geometry: Triangle similarity signs.
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  15. Chemistry: Metal chemical properties.
  16. Algebra: Interval methodes in inequalities
  17. Chemistry: Organic substance transformation.
  18. Algebra: Quadratic function y = ax² + bx + c concept
  19. Algebra: Quadratic function y = ax² + bx + c concept
  20. Algebra: Quotient
  21. Geometry: Regular polygon, perimeter and area. Regular polygon indrawn circle, regular polygon indrawn in a circle.
  22. Geometry: peak, edge, face, prism (straight and regular) pyramid (also regular), cylinder, cone, sphere.
  23. Geometry: peak, edge, face, prism (straight and regular) pyramid (also regular), cylinder, cone, sphere.
  24. Algebra: Numerical chain concept
  25. Algebra: Variation, combination
  26. Geometry: Triangle, parallelogram, diamond area formulas, through narrow angle sine value.
  27. Algebra: Variation, combination
  28. Chemistry: Hydrocarbon combustion. Calculations with chemical reaction equations.
  29. Physics: Energy usage in everyday life
  30. Algebra: Variation, combination
  31. Algebra: Probability
  32. Algebra: Combinatorics
  33. Algebra: Equivalence
  34. Algebra: Fraction inequalities
  35. Algebra: Inequality systems
  36. Algebra: Combinatorics
  37. Algebra: Difference
  38. Geometry: peak, edge, face, prism (straight and regular) pyramid (also regular), cylinder, cone, sphere.
  39. Algebra: Arithmetic progression
  40. Algebra: Interval methodes in inequalities
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  42. Physics: Electrical circuit characteristics and Ohms law in circuit.