I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

Accidentally, two trains are running in the opposite direction and enter a tunnel that is 200 miles long. A supersonic bird that has fled the lab and taken shelter in the tunnel starts flying from one train towards the other at a speed of 1000 mph. As soon as it reaches the second train, he starts flying back to avoid collision and meets the first train again at the other end. The bird keeps flying to and fro till the trains collide with each other.

What is the total distance that the supersonic bird has traveled till the trains collided?

What is next number in the pattern below:

131 517 192 123 ?

What can jump higher than a building?

Can you find the hidden animal in the picture below?

How many letters are in the alphabet?

Why are televisions attracted to people?