Combinatorics - math word problems - page 43 of 54
Number of problems found: 1077
- Two-digit 7410
How many two-digit numbers can be written using the number 0,2,6? We can also repeat the digits in the number. - Medicine
We test medicine on six patients. For all, the drug doesn't work. If the drug success rate of 20%, what is the probability that medicine does not work? - Three digits number
How many are three-digit integers such that they have no digit repeats? - Exchange € 100
Find out how many ways you can exchange € 100 if you have an unlimited number of 50, 20, 10, and 5 euro banknotes. Use a method other than listing all options systematically. - Ace
We pulled out one card from a complete set of playing cards (32 cards). What is the probability of pulling the ace? - Dices
We will throw two dice. What is the probability that the ratio between numbers on the first and second dice will be 1:2? - Different 82447
How many 4 colored flags can be made from 5 colors so that each flag consists of three different colors?
- Determine 80084
Determine the number of all natural numbers greater than 2000 in which the digits 1, 2, 4, 6, and 8 occur at most once each. - Themselves 33561
How many ways can a 6-member football club member choose a leader and captain from among themselves? - Lifespan
The lifetime of a light bulb is a random variable with a normal distribution of x = 300 hours, σ = 35 hours. a) What is the probability that a randomly selected light bulb will have a lifespan of more than 320 hours? b) To what value of L hours can the la - Bookshelf and books
How many ways can we place seven books on a bookshelf? - Practice
How many ways can you place 20 pupils in a row when starting on practice? - Seating
How many ways can 7 people sit on 5 numbered chairs (e.g., seat reservation on the train)? - Twenty
Twenty swallows sit on a 10 m long telephone cable. Assume that swallows are completely randomly distributed along the line. (a) What is the probability that more than three swallows sit on a randomly selected section of cable 1 m long? (b) What is the pr - Stella 83799
Stella rolls a die from 1 to 6. How many times does she have to roll the die to be sure that the sum will be 4?
- Conditional 73664
I roll a 7-wall dice. What is the conditional probability that three fell if an odd number fell? - 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? - Shelf
How many ways are there to arrange 6 books on a shelf? - 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? - Installments 39841 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?
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