Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

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

Take one out and scratch my head, I am now black but once was red. What am I?

Find the next number in the sequence

5 12 24 36 ?

All of you like to eat me. I am a five-lettered word. Remove the first two and I turn into an infamous animal. Remove just the first and I become a heinous crime. Remove the first and the last and you can groove on me.

Can you guess who am I?

I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?

Can you make four (4) nines (9) equal 100?

What is harder to catch the faster you run?

What does a man do only once in his lifetime, but women do once a year after they are 29?