Combinatorics - math word problems - page 17 of 57
Number of problems found: 1135
- Four numbers
I am a four-digit number, no zeros, in which the first number is five times the last, the second is four more than the first and three times the third, and the third is two more than the last and two less than the first. - Odd compound probability
In the entertainment lottery, they draw one number from 1 to 35. What is the probability that they will draw an odd compound number? - Round destiny
A bag contains 5 white and 10 red balls. Four balls are drawn at random. What is the probability of the event "at least two of the drawn balls are white"? - Lottery
Pavol has two lottery tickets, each from a different lottery. The first lottery has 1203 thousand tickets, of which 410 thousand are winners. The second lottery has 1478 thousand tickets, of which 1478 thousand are winners. What is the probability that at - Variation element count
How many elements do we create 90 variations of 2 classes without repeating elements? - A six-sided
A six-sided die is rolled once. What is the probability that the number rolled is an even number greater than two? - The dice Find the probability that a number divisible by two or three will fall when the dice are rolled.
- Combination element calculation
How many elements is it possible to form twice as many second-class combinations as a fourth-class combination? - Combination element count
From how many elements is it possible to create 120 second-class combinations? - Raffle
In the pool number from 1 to 109. What is the probability that a randomly selected number is not prime? - 2nd class variations
From how many elements can you create 5112 variations of the second class? - Variation equation
Solve the equation: V (2, x + 2) = 90 - Combination element decrease
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? - Odd prime probability What is the probability that an odd prime will fall on a dice roll?
- The box
The box contains five chocolate, three fruit, and two menthol candies. We choose sweets at random from the box. What probability will we take out one chocolate, one fruit, and one menthol candy without a return? - Variations 4/2
Determine the number of items when the count of variations of the fourth class without repeating is 5112 times larger than the count of variations of the second class without repetition. - Two-digit number writing
Write all two-digit numbers using the numbers 4 and 7 - Combinations
From how many elements can we create 990 combinations, 2nd class, without repeating? - Combinations
How many elements can form six times more combinations of the 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.
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