• 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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2621.3. Variation, combination

Write the correct answer!

Let's look at all three-digit numbers, in which notation are used numbers 1; 2; 4 and 0. How many such numbers are together?
How many such numbers are together, if the digits can not repeat?
How many three-digit numbers there are, in which notation used digits and the sum of digits does not exceed 3 (if the digits does not repeat)?
Combinatorics, probability theory elements
Variation, combination

Solve tasks to find hidden Geo point coordinates

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