Rearrange the letters in "new door" to make one word.

What is next number in the pattern below:

131 517 192 123 ?

Can you find out the total number of triangles in the given figure?

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

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

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

1. What does:
TIM JOB
represent?

2. What does:
MO_ _
represent?

2, 3, 5, 9, 17, _ What is the next number in the sequence?

The following question it puts forth you:

25 - 55 + (85 + 65) = ?

Then, you are told that even though you might think it's wrong, the correct answer is actually 5!

Whats your reaction to it? How can this be true?