# The most viewed math problems

- It is rectangular?

Size of two of the angles in a triangle are: α=110°, β=40°. Is it a right triangle? - Root

The root of the equation ? is: ? - Trio

56 children lined up in groups of three. How many children did not create a trio? - Playing cards

How many possible ways are to shuffle 7 playing cards? - Promile

Calculate the 4.6 ‰ of 199. - Pediatrician

Pediatrician this month of 20 working days takes 8 days holidays. What is the probability that on Monday will be at work? - Reverse Pythagorean theorem

Given are lengths of the sides of the triangles. Decide which one is rectangular: Δ ABC: 77 dm, 85 dm, 36 dm ? Δ DEF: 55 dm, 82 dm, 61 dm ? Δ GHI: 24 mm, 25 mm, 7 mm ? Δ JKL: 32 dm, 51 dm, 82 dm ? Δ MNO: 51 dm, 45 dm, 24 dm ? - Apples

Hanka has 6 apples more than Juro and 7 apples less than Mirka. Mirka has 23 apples. How many apples has Hanka and how many Juro? - Chickens and rabbits

In the yard were chickens and rabbits. Together they had 28 heads and 78 legs. How many chickens and how many rabbits was in the yard? - Railways

Railways climb 7.4 ‰. Calculate the height difference between two points on the railway distant 3539 meters. - Similarity

Are two right triangles similar to each other if the first one has a acute angle 70° and second one has acute angle 20°? - Lentilka

Lentilka made 31 pancakes. 8 don't fill with anything, 14 pancakes filled with strawberry jam, 16 filled with cream cheese. a) How many Lentilka did strawberry-cream cheese pancakes? Maksik ate 4 of strawberry-cream cheese and all pure strawberry pancak - Circle chord

What is the length d of the chord circle of diameter 51 mm, if the distance from the center circle is 19 mm? - Tractors

Fields go plow two tractors with various performance. The first tractor plow whole field in 11 hours, the second tractor plow whole field 19 hours longer. How long take plow whole field with two tractors? - Plums

In the bowl are plums. How many would be there if we can divide it equally among 8, 10 and 11 children? - Cube diagonal

Determine the length of the cube diagonal with edge 37 mm. - Laws

From which law follows directly the validity of Pythagoras' theorem in the right triangle? ? - Rectangular cuboid

The rectangular cuboid has a surface area 5334 cm^{2}, its dimensions are in the ratio 2:4:5. Find the volume of this rectangular cuboid. - Triangle

Can be rectangular triangle equilateral? - Pool

The swimming pool is 10 m wide and 8 m long and 153 cm deep. How many hectoliters of water is in it, if the water is 30 cm below its upper edge?

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