**
**

**M a t h e m a t i c a l j o k e s**

Two students-mathematicians, having birthdays on the same day, wished each other many happy returns on this day. One of them said:

- You’ll have such birthday only in 11 years.

The other answered him:

- Okay, but you’ll have such birthday only in 96 years.

Both of them were satisfied with each other. How old were they on this day ?

S o l u t i o n. One of them was
25, and other 24. Why?

25=5
^{
2
}
,
the next square is 6
^{
2
}
=36, i.e. in 11 years.

24=4!,
the next factorial is 5!=120, i.e. in 96 years.

**
**

*New laws of arithmetic*

A pupil divides 28 by 7 and receives as a result 13. His teacher asks him:

- How did you receive this result ?

- First I divide 8 by 7 and receive 1. Now 1 x 7 = 7 and I write:

Now I divide 21 by 7 and receive 3. Now I write:

The teacher asks him to check the result by
multiplication. The pupil answers:

- I execute 13 x 7 by the steps:

1) 1 x 7 = 7,

2) 3 x 7 = 21,

3) 7 + 21 = 28.

The teacher asks him to check the result by addition. The pupil
answers:

- First I add 3 seven times and receive 21, then I add 1 seven
times and receive 28.

**
**

*About application of mathematics in linguistics*

A teacher of English was ill and a teacher of
mathematics replaced him. He began to compose a table of irregular verbs:

Then he said:

- Okay, I mark this form as
*
x
*
. Then it’s possible
to compose the proportion:

**
**

Why do we hear a clatter of train wheels ?

*
Answer:
*
Wheel has a form
of a circle. An area of a circle is equal to
p
*
r
*
^{
2
}
, so
this square clatters.

**
**

*What difference between physicist and programmer ?*

*
Answer:
*
Physicist thinks
that 1 kilobyte = 1000 bytes, and programmer thinks
that 1 kilometer = 1024 meters.

**
**

*The shortest distance between two points*

At a geometry lesson a teacher asks to represent the shortest distance between the two points A and B on a blackboard:

The teacher asks:

- Johnny, who taught you this ?

- My father, he is a taxi driver.