Reason - practice for 14 year olds - page 2 of 40
Number of problems found: 784
- Consecutive numbers
The sum of ten consecutive numbers is 105. Determine these numbers (write first and last). - Groups 72194
I have eight groups. How could they place first, second, and third? - Significant 19983
We roll two dice, red and green. What probability will a more significant number fall on the red dice than on the green? - Numbers 7755
How many digits 7 are in numbers from 1 to 777? - Divisors 6619
Which natural number less than 100 has the largest number of divisors? - Tables and chairs
The cost of 4 tables and 3 chairs is $225, and 3 tables and 4 chairs cost $195. Find the cost of 2 chairs and 1 table. - Gold, silver, bronze
How many ways can we divide gold, silver, and bronze medals if six people compete? - AM of three numbers
The number 2010 can be written as the sum of 3 consecutive natural numbers. Determine the arithmetic mean of these numbers. - Diofant equation
250x + 120y = 5640 - Test points
If you earned 80% of the possible 40 points, how many points did you miss to get 100%? - Hexagon = 8 parts
Divide the regular hexagon into eight equal parts. - Four-digit number
Find a four-digit number, which quadrupled written backward is the same number. - Lines
How many points will intersect 14 different lines where no two are parallel? - Shooter
The probability that a good shooter hits the center of the target circle No. I is 0.1. The probability that the target hit the inner circle II is 0.58. What is the probability that it hits the target circle I or II? - Probability 71164
We roll the dice twice. What is the probability that if an even number falls for the first time, the even number will fall a second time? - Triples 67394
How many triples of sounds can be created from sounds f, o, u, r? You solve using a tree diagram. - Probability 42081
What is the probability of any two-digit natural number a) is divisible by seven, b) is divisible by nine, c) is not divisible by five. - One three
We throw two dice. What is the probability that number three falls maximally once? - Five pupils
Five pupils clean 30 chairs one hour before four pupils. How many chairs clean one pupil in 1 hour? - Tricolors
From the colors - red, blue, green, black, and white, create all possible tricolors.
Do you have homework that you need help solving? Ask a question, and we will try to solve it.