How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

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

Can you find the ages of a son, father and grandfather based on the following facts?
The sum of the ages of grandfather, father and son is 140 years.
The age of the son in months is the same as the grandfather in years.
The age of the son in days is the same as the father in weeks.

A man fell off a smuggling boat into deep water. He could not swim and he was not wearing anything to keep him afloat. It took 30 minutes for the people on the boat to realize someone was missing. The missing man was rescued two hours later on the return trip. Why didn't he drown? Note:- He didn't know swimming, the sea was deep, and He wasn't holding anything

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

What Time Should the last watch show in the below figure?

why number 8549176320 is one of a kind?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?