How can you make number one disappear by adding something to it?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

Can you count the number of triangles in the given picture?

A boy collects white seashells from the sea and brings them home every night. When he has enough of them, he decides to sell them to a trader.

The trader is ready to buy the shells and he asks the boy about the quantity. At this, the boy starts calculating. He has a giant box that contains 3 mini boxes. Two of them have another mini box inside. If the giant box can hold 50 shells, how many brown shells can he sell to the trader?

I know a nine-letter word having only one vowel.
Do you ?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

What number should come in place of the question mark below?

The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

1. Where does Easter come from before Valentine's Day?

2. Do you know what is in the middle of Valentine's?

3. What did the lady bee say to the man bee on the occasion of Valentine's Day