Variations - practice problems - page 7 of 15
Number of problems found: 285
- Five letters
How many ways can five letters be arranged? - Defective 22153
There are 11 products in the box, of which just four are defective. How many ways can we choose five products so that at least four are not faulty? - Combinations and eggs
You have colored 4 red eggs, 3 green, 4 yellow, 5 blue, and 5 white. A caroler stops by you, and you decide to give him three eggs of different colors. How many options (different color combinations) do you have for gifting a caroler? - Arithmetic 20153
The teacher has 12 examples from geometry and 15 examples from arithmetic. How many papers can he create if he wants three examples from geometry and five from arithmetic in the letter?
- Calculated 19363
Peter calculated how many placement options there were with four teams, A, B, C, and D, in the first three places. He helped himself with a tree diagram. Complete the solution. - Three-digit 16763
Ferko received a briefcase with an adjustable three-digit code for his birthday. How many options do you have to set the code if you like a number with two sevens? - Four-digit 16463
How many can we create four-digit numbers that digits can repeat from digits 0,1,2,3,…, 9? - Possible combinations - word
How many ways can the letters F, A, I, and R be arranged? - Temperature variations
Today's temperature was 80 degrees, and then the temperature dropped 10 degrees. Then it dropped 15 degrees again; the next day, the temperature went up 2 degrees. What would the temperature be?
- Beads
How many ways can we thread four red, five blue, and six yellow beads onto a thread? - Cube construction
A 2×2×2 cube will be constructed using four white and four black unit cube. How many different cubes can be constructed in this way? ( Two cubes are not different if one can be obtained by rotating the other. ) - Boys and girls
There are 20 boys and ten girls in the class. How many different dance pairs can we make of them? - Year 2020
The four-digit number divided by 2020 gives a result of 1, **. (Can not be in form 1,*0. ) Write all the options. - Two groups
The group of 10 girls should be divided into two groups with at least four girls in each group. How many ways can this be done?
- Vice-chairman 10181
The committee consists of 6 men and four women. How many ways can the chairman, vice-chairman, secretary, and manager be chosen so that a chairman is a man and the vice-chairman is a woman? - Graduation party
There were 15 boys and 12 girls at the graduation party. Determine how many four couples can be selected. - Probability 8801
We roll two different dice. What is the probability that a pair of even numbers will fall? - Possibilities 8450
There are 11 pupils in the group, among them just one Martin. How many possibilities are there for distributing 4 different books to these pupils if each is to receive at most one and Martin just one of these books". - Probability 8419
What is the probability that when dealing cards after 4, in the game Quartet (eight of fours), we will get the whole quartet?
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