In a contest, four fruits (an apple, a banana, an orange, and a pear) have been placed in four closed boxes (one fruit per box). People may guess which fruit is in which box. 123 people participate in the contest. When the boxes are opened, it turns out that 43 people have guessed none of the fruits correctly, 39 people have guessed one fruit correctly, and 31 people have guessed two fruits correctly.
How many people have guessed three fruits correctly, and how many people have guessed four fruits correctly

Find out the number of circles in the given picture having Illusion

A Car driver was heading down a street in Washington. He went right past a stop sign without stopping, he turned left where there was a 'no left turn' sign and he went the wrong way on a one-way street. Then he went on the right side of the road past a cop car. Still, he didn't break any traffic laws. Why not?

What's the next in the series?

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

Can you place three balls such that the equation shown in the picture holds true?

What runs around the whole yard without moving?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

What type of tree can I carry in my hand?

What can go up a chimney down, but can’t go down a chimney up?