John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

Can you fill the blank with the correct number?

6 30 870 756030 _____

There is a unique number which when multiplied by any number from 1 to 6, we will get the new number that contains the same digits only.

Can you find that number?

Decode below rebus
D
N
A
T
S , D

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

I go up and I go down.
I go up towards the beautiful sky and down toward the green ground.
I am present tense.
I am past tense too
Children love me.

Who Am I?

What work can one never finish?

If eleven plus two equals one, what does nine plus five equal?

Can you count the number of quadrilaterals in the picture below?