What is common among 11, 69, and 88?

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

Can you write down eight eights so that they add up to one thousand?

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

The peacock is a bird that does not lay eggs. How do they get baby peacocks?

You need to remove two matchsticks to make the below equation true. Can you do it ?

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?

Can you replace the question mark with the correct number?

All of Jacob's shoes are red except two.
All of Jacob's shoes are green except two.
All of Jacob's shoes are yellow except two.

How many shoes does Jacob have?

Why do you find that most of the buildings are deprived of the 13th floor?