# Reason - practice problems

#### Number of problems found: 1490

- Variations 70724

If we increase the number of elements by 2, the number of variations of the second class without repetition increases by 22. How many elements do we have initially? - Combinations 70714

If we increase the number of elements by 1, the number of combinations of the third class without repetitions increases by 10. How many elements do we have? - Rectangles 70304

How many rectangles whose side lengths are expressed in natural numbers have an area of 96 cm²? - Michalovci 69494

How many different courses could the match between AC Michalovci and Juvent Turiec have, which ended 2: 1? - Wallpapers 69424

Lucia's mobile phone offers a choice of 10 ringtones, seven tones when receiving an SMS, and 15 wallpapers in the background of the display. How many ways can Lucia set up her mobile? - VAT example

The following data were provided by Halo Mango Delight, a VAT taxpayer, for the month of October, November and December 2021 (VAT excluded): Compute the Value added tax of the store for 4th Quarter of 2021. (Show computation in solving the problem). VAT r - Determine 69304

Determine the size of the ACF angle in the regular ABCDEF hexagon. - Three-digit 69114

How many three-digit numbers have a digit sum of 6? Write the ratio of the number of created even and odd numbers and adjust it to the basic form. - Two-digit 68654

List all compound positive two-digit numbers whose greatest common divisor with the number 51 is the number 17. - Divisible 68644

List all divisible numbers by six and seven and are greater than 79 and less than 91. - Probability 68564

What is the probability that the number a) greater than 4, b) the number greater than four will fall on the dice roll? - Shortest walk

An ant is crawling around this cube. The cube is made of wire. Each side of the cube is 3 inches long. (Those sides are called edges.) Points A and B are vertices of the cube. What is the least distance the ant would have to crawl if it starts from point - Workshops 67984

In eight workshops, 40 employees process 32 tons of oranges. How many workers will process 9 tons of oranges in 9 workshops? - Minutes 67614

If eight eggs we cooked in 10 minutes, how long will it take to cook 28 eggs? - Peter 67584

Peter was twice as old as Pavel. 4 years ago, Petr was three times older than Pavel. How old are they now? - Constructed 67424

There are six lines 3 cm, 4 cm, 5 cm, 7 cm, 8 cm, and 9 cm long, two of each length. How many isosceles triangles can be constructed from them? List all options. - Triples 67394

How many triples of sounds can be created from sounds f, o, u, r? You solve using a tree diagram. - Circumference 66964

We have to construct a rectangle with a circumference of 30 decimetres. The rectangle has sides in whole decimetres. How many different rectangles can we make? - Five-digit 66894

Create all five-digit numbers in ascending order from three, four, and two zeros. - Three-digit 66854

How many three-digit numbers with a digit sum of 9, in which no digit can repeat?

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