The examiner has prepared 20 examples from arithmetic. He wants to choose seven samples for the paper. The order of the examples does not matter. How many different papers can he compile?
Did you find an error or inaccuracy? Feel free to write us. Thank you!
Thank you for submitting an example text correction or rephasing. We will review the example in a short time and work on the publish it.
Tips for related online calculators
Would you like to compute the count of combinations?
You need to know the following knowledge to solve this word math problem:
Grade of the word problem:
Related math problems and questions:
- Different 7860
How many different triplets can be created from 4 pupils if it does not matter the order of the pupils in the triplets?
- Ribbons 6640
Danka knits a sweater and has a choice of seven colors. a) How many ways can he choose three colors for the sleeves? b) He wants ribbons of four colors on his back. How many options does he have to choose from?
The teacher prepared a test with ten questions. The student can choose one correct answer from the four (A, B, C, D). The student did not get a written exam at all. What is the probability that: a) He answers half correctly. b) He answers all correctly. c
How many different flags can be made from green, white, blue, red, orange, yellow, and purple materials, so each flag consists of three different colors?
- 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?
- The confectionery
The confectionery sold five kinds of ice cream. How many ways can I buy three kinds if the order of ice cream does not matter?
- Friends in cinema
5 friends went to the cinema. How many possible ways can they sit in a row if one of them wants to sit in the middle and the remaining place does not matter?
- Possible 16243
There are 30 students in the class, three of whom will be tested. How many ways are possible if their order does not matter?
- Ice cream
Annie likes ice cream. In the shop are six kinds of ice cream. How many ways can she buy ice cream in three scoops if each has a different flavor mound and the order of scoops doesn't matter?
- Raspberries 66824
Klára wants to make a fruit cocktail from three types of fruit. It has pineapple, pears, bananas, raspberries, and cherries. How many different cocktails can he create?
- An architect
An architect is designing a house. He wants the bedroom to have the dimensions of 8 ft by 4 ft by 7 ft. The architect doubles all three dimensions to create the den. Does that mean the den will have double the volume of the bedroom? First, find the volume
- (four-seater) 17053
Karel wants to take some 15 classmates out of school after graduation. How many passengers does he have to choose if he has to fill the car (four-seater)?
- Doesn't 37531
How many ways can you draw eight playing cards from 32 playing cards when their order doesn't matter?
- Sequentially 35731
In the pocket, there are six different tickets marked with numbers 1 to 6. In how many different ways can we choose three of them sequentially, taking into account the order if the chosen tickets return to the pocket?
- Combinations 7
A multi-course meal has three choices. Three appetizers, four main courses, and three desserts. How many different combinations to choose from?
- Fish tank
A fish tank at a pet store has 8 zebrafish. In how many different ways can George choose 2 zebra fish to buy?
- Calculate 3502
The gardener planted 3/7 of the prepared tulips on the first and 1/7 on the second. What part of the prepared tulips did he already plant? What part does he have left? Can we calculate how many tulips there are? Which data is missing?