# Reason - 8th grade (13y) - math problems

#### Number of problems found: 473

- Seven

Seven friends agree to send everyone a holiday card. How many postcards were sent? - Coins

On coins found was stated that from the year 87 BC. It is right? - One three

We throw two dice. What is the probability that max one three falls? - Pair

They have together 39 years - he has 2 times as she was when he was equal as she has today .... - Two integers

Two integers, a and b, have a product of 36. What is the least possible sum of a and b? - Probability

How probable is a randomly selected three-digit number divisible by five or seven? - Divisibility

Write all the integers x divisible by seven and eight at the same time for which the following applies: 100 - Brackets

Place one pair of brackets in expression 20-16 + 10 - 4 - 2 so that the result will be 0. - Chess

How many different ways can initiate a game of chess (first pass)? - The dice

What is the probability of events that if we throw a dice is rolled less than 6? - Two-element combinations

Write all two-element combinations from elements a, b, c, d. - Tricolors

From the colors - red, blue, green, black and white, create all possible tricolors. - Probably member

Look at the series 2,6,25,96,285, ? What number should come next? - Years

Susan is 3 years and as she will be old as Teodor now him will be 11. How old is Teodor today? - Marriage sttus

In our city, there are 3/5 of the women married to 2/3 of the men. Find what part of the population is free. - Combinations of sweaters

I have 4 sweaters two are white, 1 red and 1 green. How many ways can this done? - Three ints

The sum of three consecutive integers is 2016. What numbers are they? - Two ages

Gabrielle is 9 years younger than Mikhail. The sum of their ages is 87. What is Mikhail's age? - Family

Mom is 42 years old and her daughters 13 and 19. After how many years will mother as old as her daughter together? - Series

Andrew wrote this series of numbers: 1,3,7,15, .... n. Which number in the series does not belong? ?

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