Math Teacher :
If a=b  and b=c then a=c,
now give me the practical example of this principle from real life.

Student :
I love you sir
and you love your daughter
which means I love your daughter.

One day a mathematician decides that he is sick of math. So, he walks down to the fire department and announces that he wants to become a fireman.

The fire chief says, “Well, you look like a good guy. I’d be glad to hire you, but first I have to give you a little test.”

The fire chief takes the mathematician to the alley behind the fire department which contains a dumpster, a spigot, and a hose. The chief then says, “OK, you’re walking in the alley and you see the dumpster here is on fire. What do you do?”

A boy was teaching a girl arithmetic, he said, it was his mission.
He kissed her once; he kissed her twice and said, “Now that’s addition.”

In silent satisfaction, she sweetly gave the kisses back and said, “Now that’s subtraction.”

Then he kissed her, she kissed him, without an explanation.
And both together smiled and said, “That’s multiplication.”

Then her Dad appeared upon the scene and made a quick decision.
He kicked that boy three blocks away and said, “That’s long division!”

A mathematician organizes a raffle in which the prize is an infinite amount of money paid over an infinite amount of time.

Of course, with the promise of such a prize, his tickets sell like hot cake. When the winning ticket is drawn, and the jubilant winner comes to claim his prize, the mathematician explains the mode of payment:

“1 dollar now, 1/2 dollar next week, 1/3 dollar the week after that…”