Reason - practice problems - page 2 of 99
Number of problems found: 1961
- Three-digit
How many do three-digit natural numbers not have the number 7? - Lottery
The lottery is 60000 elk, in which 6200 wins. What is the probability that the purchase of 12 elks won nothing? - Hypotenuse 82331
Given a right triangle KLM with a right angle at M. What is the magnitude of the hypotenuse m if the magnitude of the normal to the hypotenuse m is 4? - Inequality 12021
Solve on Z - inequality with absolute value: | x-18 | +4> 1 - Five couples
In how many ways can 5 couples arrange themselves in a row if they stay together? - No solutions
Why does the equation 9-2x-9-16x=-14x-7-4x-11 have no solutions? - Is right triangle
Decide if the triangle XYZ is rectangular: x = 4 m, y = 6 m, z = 4 m - Chickens
4 chickens give 4 eggs in 4 days. How many eggs can give 8 chickens for 8 days? - Book
To number pages of the thick book, the printer used 4201 digits. How many pages has this book? - N-gon angles
What is the sum of interior angles 8-gon? What is the internal angle of a regular convex 8-polygon? - Contains 66184
Which natural number contains 12 thousand, 15 hundred, 21 tens, and 11 units? - Arithmetic 40671
The number 20 is the arithmetic mean of the eight numbers. Determine their sum. - Probability 7628
The probability that six will fall in just three rolls is once? - Most divisors
Find the number with the most divisors from the natural numbers 1 to 100. - Fast tourists
If three tourists pass the route in 5 hours, how long will the same route take six equally fast tourists? - Magnitude of angle
What magnitude has an obtuse angle enclosed by the hands of clocks at 12:20 hours? - The lift
The lift can fit four people. How many uphill rides must the lift make to move up 12 passengers? - Dice
We throw five times the dice. What is the probability that six fits precisely twice? - Rhombus 29
One of the diagonals of a rhombus is equal to a side of the rhombus. Find the angles of the rhombus. - Unknown number
I think the number: Its half is by 16 more than his quarter. I think the number is N.
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