Combinatorics + quadratic equation - practice problems
Number of problems found: 27
- Ninth-grade 5446
When the ninth-grade boys and girls said goodbye at the end of the school year, they each gave each other their photos. It was a total of 552 images. How many farewells were there? - Participated 81728
The school volleyball tournament was played on a one-on-one basis. One match lasted 15 minutes, and 3 hours and 45 minutes were played. Calculate how many teams participated. - Tournament 61544
In an amateur chess tournament, everyone plays with everyone. There are a total of 171 chess games on the program. How many players take part in the match? - Variations 26791
If the number of elements increases by two, the number of variations of the second class of these elements created by 38 increases. What is the original number of elements?
- Variations 4/2
Determine the number of items when the count of variations of the fourth class without repeating is 600 times larger than the count of variations of the second class without repetition. - Combinations 80637
If the number of elements decreases by 4, the number of combinations of the second class from these elements decreases three times. How many elements are there? - Combinations 16283
How many elements is it possible to form twice as many second-class combinations as a fourth-class combination? - Combinations 16213
From how many elements is it possible to create 120 second-class combinations? - 2nd class variations
From how many elements can you create 5112 variations of the second class?
- Combinations
From how many elements can we create 990 combinations, 2nd class, without repeating? - Combinations
How many elements can form six times more combinations fourth class than the combination of the second class? - Variation equation
Solve combinatorics equation: V(2, x+8)=72 V(2,x+8) is variations, second class, from x+8 items. - Variations 8333
How many elements do we create 90 variations of 2 classes without repeating elements? - 2nd class combinations
From how many elements can you create 2346 combinations of the second class?
- Equation: 4274
Solve the equation: V (2, x + 2) = 90 - Diagonals
What x-gon has 54 diagonals? - Participants 80965
After the meeting, all participants shook hands with each other - a total of 105 times. How many people were there at the meeting? - Combinations 70714
If we increase the number of elements by 1, the number of combinations of the third class without repetitions increases by 10. How many elements do we have? - Party
At the party, everyone clinked with everyone. Together, they clink $strng times. How many people were at the party?
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Are you looking for help with calculating roots of a quadratic equation? Would you like to compute the count of combinations? Combinatorics - practice problems. Quadratic Equations Problems.