If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

How old is your son? asked a man to his neighbour. My son is five times as old as my daughter and my wife is five times as old as my son. I am twice as old as my wife whereas my grandmother, who is celebrating her eighty-first birthday is as old as all of us put together.

How old is the man's son ?

If all the below statements are true

1. Gianni was either in Italy or France in 1997.
2. If Gianni did not kill Versace, Hilton must have killed him.
3. If Versace died of suffocation, then either Gianni killed him or Versace committed suicide.
4. If Gianni was in Italy in 1997, then Gianni did not kill Versace.
5. Versace died of suffocation, but he did not kill himself.

Who killed Versace and where was Gianni in 1997?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

The more of this there is, the less you see. What is it?

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?