In a concert, Christina is performing a dance show with her group.
At 10:00, she and her crew were dancing in an absolutely straight line. At that time Christina was standing in 4th position from both the front and back end of the row.

What was the size of her crew?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

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.

Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

Can you guess the name of the month by looking the below rebus ?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

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

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different.

How do you measure 45 minutes?