using four eights (8) and a one (1) and one mathematical symbol , create the number 100

A letter is hidden in the image in plain sight. Can you spot it in 6 seconds? Test your eye power now!

At a party, there are five people and a whole round cake lying at the centre of the table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table. How can they make sure that everyone gets a 1/5th of the piece?

Today is John's birthday.
A year ago, John had five candles and he lit all the candles except the one at the last.
Now he is going to light all the candles.

How old is John Today?

(He is not five today.....)

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

How far can you walk into the woods?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

What word is identified by the below rebus?

Your Your Your Your Your
Your Your Your Your Your

Why do you find that most of the buildings are deprived of the 13th floor?