Multiplication principle + variations - practice problems
Number of problems found: 214
- Five couples
In how many ways can 5 couples arrange themselves in a row if they stay together? - Pins 2
How many different possible four digits pins can be found on the 10-digit keypad? - Medals
How many ways can gold, silver, and bronze medals be divided among 21 contestants? - 2nd class variations
From how many elements can you create 5112 variations of the second class? - Options 3572
We roll three dice. Write down all the feast options. - Disco
At the disco goes 12 boys and 15 girls. In how many ways can we select four dancing couples? - A three-digit numbers
Determine the total number of positive three-digit numbers that contain a digit 4. - Seven
Seven friends agreed to send everyone a holiday card. How many postcards were sent? - Six on dice
When throwing two dice, what is the probability they will fall at least one six? - Variations 26791
If the number of elements increases by two, the number of variations of the second class of these elements created by 38 increases. What is the original number of elements? - Probability 8801
We roll two different dice. What is the probability that a pair of even numbers will fall? - Possible combinations - word
How many ways can the letters F, A, I, and R be arranged? - Olympics metals
How many ways can one win six athletes' medal positions in the Olympics? Metal color matters. - Task of the year
Find the number of integers from 1 to 106 with ending four digits 2015. - Vans
In how many ways can 5 shuttle vans line up at the airport? - Gradually 67284
Petra borrowed four books from the library at the beginning of the summer holidays. How many orders in which she could gradually read them? - Five-digit 37121
How many different five-digit numbers can we create from digits 4 and 5? - Five-digit 35261
How many five-digit numbers do we create from digits 1, 2, and 3? - Positions 26151
How many positions are there to store three books on the shelf? - Repetition 8329
How many 5-digit numbers without repetition have the last digit two smaller than the previous one?
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