Multiplication + reason - practice problems - page 9 of 18
Number of problems found: 351
- 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? - 102—likewise 8205
The number 20 137 is "like" the number 73 102—likewise, the decimal numbers 41.9 and 9.14, or 31.08 and 80.13, like each other. Find two mutually exclusive numbers whose product is 357.435. - 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. - Sum and ratio
The sum and ratio of two numbers are equal to 10. Which numbers are they?
- 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? - Situation 7911
How many years will elapse from 1 January 2013 before the situation occurs that the product of the digits of a given year is greater than the sum of the digits of that year? A) 87 b) 98 c) 101 d) 102 e) 103 - 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?
- Volleyball 7827
In the volleyball tournament, three teams and four foreign teams played, each with each other, in one match without revenge. How many games have been played? - Pages counting
There are pages numbered 2 to 104 in the book. How many digits have to be printed to number the pages? - Together 7735
The two typists wrote a total of 65 pages; although the former wrote an hour longer than the latter, she wrote 5 pp. Less; the second write 2 more pages per hour than the first. How many pages will they both write together? - Eggs
3400 eggs sliced hens for February and March. We must calculate how many hens can make 3400 eggs when one hen gives two eggs a day for 59 days. - Each with each
Five pupils from 3A class played table tennis. How many matches did they play with each other?
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