Combinatorics - math word problems - page 46 of 57
Number of problems found: 1135
- 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. - Green cards
We draw 4 cards from a deck of 32 cards. In how many ways can we draw: a) exactly 2 aces, b) exactly 3 green cards? - 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 - 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 - Find two digits
Find the possible values of A and B if the six-digit number 2 A16B6 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? - Subsets
How many are all subsets of set C = (97, 67, 66, 18, 59, 64)? - Students 34
Students were surveyed as part of a Statistics project to determine if younger adults are more likely to have tattoos. The results are listed in the two-way table below: age; At least one tattoo; No tattoo; Row totals Age 18 - 29; 165 ; 342; 507 Age 30 - - Events
Event W has the probability of 0.57. What is the probability that the event W occurs in 2, 6, 5 try? - Chi-square
The number of employees in the field of culture in country A and country B was compared. The following numbers of employees in thousands of persons were found: country A x/46/45/41/48/49/ country B y/128/135/147/152/148/. At the test level α=0.05 determin - 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. - Ten points
There are ten arbitrary points in the plane. How many circles can we make from them? - Digits
Write the smallest and largest 2-digit natural number. - Euro installment distribution
I received 30 euros in 7 installments, each installment being in whole euros. How many ways could this happen? What if the installments can be even 0 euros? How many possible solutions will there be? - Pairs
Teachers must choose one pair of boys and girls from the five girls and four boys. A) How many such pairs of (M + F)? B) How many pairs were only boys (M + M)? C) How many are all possible pairs? - Lottery
The lottery is 47000 elk, in which 4800 wins. What is the probability that the purchase of 6 elks won nothing? - Bicycle sales
A buyer for a department store estimates that the number of mountain bicycles sold during the summer season will range between 40 and 90 with the distribution - number of bicycles sold - 40, 50, 60, 70, 80, 90 with the probability of sale - 0.05, 0.15, 0.
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