A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

A man died, leaving $10,000,000 for his widow, 5 sons and 4 daughters. Each daughter received an equal amount, each son received twice as much as a daughter, and the widow received three times as much as a son.

How much did the widow receive?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

Can you identify the famous TV character from the rebus below?

Jenifer and Jesica are having a conversation.

Jenifer: I am definitely not over 30.
Jesica: I am 28 and you are surely 5 years older to me at least.
Jenifer: No, you are at least 29.

You are told that both of them are lying throughout in the conversation. Can you find their respective ages?

Find the missing letter in the last circle logically in the given below picture.

There are forty elephants and they have forty-fore heads. How can this be possible?

If 21x = 79x, what is the value of x?

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.