A word I know has six letters it contains, remove one letter and 12 remain. What is it?

Count the number of triangles in the given picture.

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

Which number should replace the question mark?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

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

John bought 150 chocolates but he misplaced some of them. His Father asked him how many chocolates were misplaced.
He gave the following answer to him:
If you count in pairs, one remains
If you count in threes, two remain
If you count in fours, three remain
If you count in fives, four remain
If you count in sixes, five remain
If you count in sevens, no chocolate remains.

Can you analyze the statements and tell us how many chocolates were lost?

What brings you down but never up?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?