Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

Who is that with a neck and no head, two arms and no hands? What is it?

what one word does the below rebus identifies?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

Which is faster, Heat or Cold ? Explain.

Move three sticks of the spiral below to form a square.

What is common among 11, 69, and 88?

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 figure out the logic I used to decide the order of the following words:
gun, shoe, spree, door, hive, kicks, heaven, gate, line, den