Combinatorics - math word problems - page 44 of 55
Number of problems found: 1085
- 7 heroes
6 heroes galloping on 6 horses behind. How many ways can we sort them behind? - Refrigerator, lemonades
How many possible ways can we store three lemonades, four mineral waters, and two juices in the refrigerator next to each other? - Two dice
We roll two dice. What is the probability that the sum of the falling numbers is greater than 3? - Cinema seat probability
Calculate the probability of the event that you sit in seats 1 to 30 in the cinema at: a) seat marked with a prime number b) seat marked with an even number c) a seat marked with a number divisible by 3 or 4 - Three numbers
We have three different non-zero digits. We will create all three-digit numbers from them and use all three figures in each. We add all the made numbers and get the sum of 1554. What were the numbers? - Family children probability
We randomly choose a family with three children. We distinguish between gender and age. Determine the probability that: a) the youngest girl will be among the children b) all children will be of the same sex - Variations Class Comparison
From how many elements can we create six times as many variations of the second class without repetition as variations of the third class without repetition? - Chocolates
In the market, we have 3 kinds of chocolates. How many ways can we buy 8 chocolates? - Assembly time
The assembly time for the toy follows a normal distribution with a mean of 75 minutes and a standard deviation of 9 minutes. The company closes at 5 pm every day. If one starts assembling at 4 pm, what is the probability that he will finish before the com - Natural number digits There is no 0 in the decimal notation in natural numbers; there are even numbers or odd numbers, each at least once. Find the number of all k-digit natural numbers.
- Green cards
We draw 4 cards from 32 cards. In how many ways can we draw a) exactly 2 aces, b) 3 green ones - Dice sum probability
What is the probability that a roll of three dice will result in a number less than 7? - A bag
A bag contains nine blue marbles and one green marble. What is the probability of drawing a blue marble followed by a green marble without replacing the first marble before drawing the second marble? - Words
How many 2 letters "words" are possible using 14 letters of the alphabet? a) without repetition b) with repetition - Probability of Ball Number
We have 20 balls in the bag, numbered from 1 to 20. Determine the spring probability that I will pull a ball with a steam number and less than 13 from the bag. - Find two digits
Find the possible values of A and B if the six-digit number 2A16B6 is divisible by 4 and 9. Please write the result as a composed number. - Lion or virgin
We toss the coin, and every throw fits a lion or a virgin with an equal probability of 1/2. Determine how much we have to make throws that, with the probability of 0.9, lions fell at least once. - Stacks
Annie has a total of $ 414. The money must be divided into stacks so that each buyer has the same amount. How many options does she have? - Events
Event W has the probability of 0.57. What is the probability that the event W occurs in 2, 6, 5 try? - Subsets
How many are all subsets of set C = (97, 67, 66, 18, 59, 64)?
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