Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2.
What is the probability that the other kid is also a girl?

Hint: It is not 1/2 as you would first think.

What do the following words have in common?

Assess
Banana
Dresser
Grammar
Potato
Revive
Uneven
Voodoo

Can you find out who is the kidnapper in below Picture and why, Explain ?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

Which is the smallest number that you can write using all the vowels exactly once?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

John: "Hi Teacher, What is your favourite movie ?".
Chemistry Teacher: "Indium Cerium Platinum Iodine Oxygen Nitrogen".
Ten seconds later... John replied I got it.

Do you?