Can you find the key in the picture below?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

A woman shoots her husband.

Then she holds him under water for over 5 minutes.

Finally, she hangs him.

But 5 minutes later they both go out together and enjoy a wonderful dinner together.

How can this be?

What is the largest number you can write with just 3 digits?

In a rainy season, one day 3 huge ladies walked under a normal-sized umbrella.
The umbrella is not huge enough to accommodate all 3 ladies yet not a single lady got wet. Why?

Can you solve this picture maths equation?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

What's the only room from which no one can enter or leave