Why do we preferably have round manhole covers and not square ones?

There are two words one resembles the "state of rest" and the other is related to "writing/reading material".

Can you name these two words which also sound similar?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?

In the given picture, you can find two letters missing. When two particular letters are placed in the missing spots, you get an eight-letter word while reading in the anti-clockwise direction. Can you find out the missing letters and the missing word eventually?

Whats the next number in the below number sequence pattern.

Find the number of squares in the below picture

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

Can you count the number of lines in the below picture?

What does the below image rebus riddle means ?