Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

You stand in front of two doors. A guard stands next to each door. You know the following things: one path leads to paradise, the other leads to death. You cannot distinguish between the two doors. You also know that one of the two guards always tells the truth and the other always lies. You have permission to ask one guard one question to discover which door leads to paradise. What one question would you ask to guarantee you enter the door to paradise?

Replace the question mark with the correct number.

Find the next number in the sequence

5 12 24 36 ?

Jack have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the colour of the socks. How many of the socks did he want to take to match one pair

If you had an infinite supply of water and 5-quart and 3-quart pails, how would you measure exactly 4 quarts? What is the least number of steps you need?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

Can you replace the question mark with the correct letter?

6 + 6 + 6 = N
7 + 7 + 7 = E
8 + 8 + 8 = R
0 + 0 + 0 = ?