Why is the Hole below a Lock?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Can you name an animal whose killing cannot be performed without spilling your own blood?

Why is 6 afraid of 7?

Kareena is older than Katrina and younger than Karishma. Isabelle is younger than Bipasha and Karishma. Bipasha is older than Karishma. If Kareena and Isabelle are the same age, who's the youngest?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

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.

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

A mathematician couple was having a Frappuccino in Starbucks sitting opposite to each other. Suddenly the guy noticed the text written on the paper in front of them and exclaimed that it was wrong. The girl denied it and said it is appropriate. Both are correct. What is written on the paper?