Reason + multiplication principle - practice problems - page 7 of 12
Number of problems found: 223
- Different 9711
A new bus route network was built. There are three stops on each line. In addition, every two lines either do not have a common stop or have only one common stop. What is the largest number of tracks there can be in a town if we know there are only nine d - Three-digit 9531
How many three-digit numbers do not change if we replace the digit in the hundreds with the digit in the units? - Graduation party
There were 15 boys and 12 girls at the graduation party. Determine how many four couples can be selected. - 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? - Balls 8358
We have five red, four blue, and seven white balls in the bag. At least how many balls do we have to pull out to have at least one white ball on the table? - Five-digit 8357
How many five-digit numbers can you create from the numbers 1,2,3,4,5,6 if 1 and 2 must always be next to each other? We cannot repeat the digits. - Generated 8349
The numbers 1,2,3,4,5 are given. Role: a) how many 4-digit numbers can we create if the digits cannot be repeated? b) how many generated numbers will not contain the digit 1? c) How many of the generated numbers will be divisible by 5? d) How many of the - Participants 8335
How many ways can you be rewarded in the 1st, 2nd, or 3rd place? The prize for 15 participants in the competition?
- One three
We throw two dice. What is the probability that number three falls maximally once? - Representative 8328
How many ways can a commander and a representative of a 20-member group be elected? - Holidays with grandmam
We packed three white, red, and orange T-shirts and five pairs of pants - blue, green, black, pink, and yellow. How many days can we spend with the old mother if we put on a different combination of clothes every day? - Possibilities 8237
How many different possibilities of settling friends A B C D E F on six seats if A wants to sit next to C - Bookshelf and books
How many ways can we place seven books on a bookshelf?
- 4-digit 8231
How many 4-digit numeric pin codes can be created so that not all four digits are identical? - A jackpot
How many times must I play this jackpot to win? A jackpot of seven games having (1 X 2), i.e., home win or away win. - Necklaces 8006
Elena has four beads: yellow, two pink, and green. How many different colored necklaces can he create? - Four-digit 7953
How many four-digit codes on the wheel lock can we create from the digit 0,1,2,3,4,5,6,7,8,9 if it is true that we cannot repeat the numbers? - Boys and girls
There are 11 boys and 18 girls in the classroom. Three pupils will answer. What is the probability that two boys will be among them?
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