числовые последовательности
Найдите лишнее число:
1, 3, 17, 7, 193, 13
1 - не простое число
четырёхугольник
quadrilateral
What occurs once in every minute,
twice in every moment,
but never in a thousand years?
m
Разгадать закономерность
2, 3, 3, 5, 10, 13, 39, 43, 172, ...
177, 885
внешний угол
exterior angle
A criminal gets to pick his punishment by choosing among three rooms.
the first is full of burning fires,
the second is full of assassins with loaded guns,
the third is full of lions that haven't eaten in a year.
Which room is the safest choice?
room three
188 (300) 263
893 (???) 915
88
Смежные углы
Adjacent angles
An electric train is going 60 km/h north, the wind is blowing 40 km/h from the south. Which way is the train's smoke blowing?
What smoke?
It is an electric train.
Если 736 - 1
308 - 3
144 - 0
240 - 1
852 - 2
то что тогда 688 - ?
5
Быть равным
Congruent
You knock a chair over in the library, and suddenly 20 eyes are looking at you.
How many people in the library?
11
742 (8710) 138
395 (12167) 972
812 (?) 356
1168
Многочлен
Polynomial
What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?
5.9