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

How can you make a TV, a bed, a dog, and a car liquid?

A number with an interesting property:

When I divide it by 2, the remainder is 1.
When I divide it by 3, the remainder is 2.
When I divide it by 4, the remainder is 3.
When I divide it by 5, the remainder is 4.
When I divide it by 6, the remainder is 5.
When I divide it by 7, the remainder is 6.
When I divide it by 8, the remainder is 7.
When I divide it by 9, the remainder is 8.
When I divide it by 10, the remainder is 9.

It's not a small number, but it's not really big, either.
When I looked for a smaller number with this property I couldn't find one.

Can you find it?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

Different lights make me strange by changing me into different sizes. What am I?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

What is the next number in this matchsticks series riddle?

A man looks at a painting in a museum and says, “Brothers and sisters I have none, but that man’s father is my father’s son.” Who is in the painting?

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?

Find the smallest sentence with all the English alphabet.