Why 1729 is a magic number? Answer Logically.

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

What goes up but never comes down?

I have Rs.50 and I spend it in the way as below.

Can you find the mistake in the below statement?

What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?

In a school, 280 students studied chemistry, 254 students studied physics and 280 students studied biology.

97 students studied chemistry as well as physics, 138 students studied physics as well as biology and 152 students studied chemistry as well as biology.

73 students studied all the three branches.

Can you find out the total number of students?

I got a bee but no honey.
got an eye but am still blind.
got a sea but no water.
got a tea but no coffee.
got a why but no answer.

What Am I?