Rearrange the letters in "new door" to make one word.

Two boys were admitted to a school. When the headmaster asks them about their parents, they tell him that they have same parents (father and mother). On further inquiry, it turns out that they both share the same date for their birthday.

"Are you twins," ask the headmaster.
"No," replies the boys.

Is it possible?

Find the hidden tiger in the given optical illusion ?

In the image below, can you find the value of an angle(y)

There are six people in a family namely M, N, O, P, Q and R.

R and O are brother and sister.

N is the brother of Q's husband.
P is the father of M and grandfather of R.

How many male members are in the family?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

Why do you find that most of the buildings are deprived of the 13th floor?

Find the last number in the series below:

voN luJ yaM raM ---

Mr Black, Mr Gray, and Mr White are fighting in a truel. They each get a gun and take turns shooting at each other until only one person is left. Mr Black, who hits his shot 1/3 of the time, gets to shoot first. Mr Gray, who hits his shot 2/3 of the time, gets to shoot next, assuming he is still alive. Mr White, who hits his shot all the time, shoots next, assuming he is also alive. The cycle repeats. If you are Mr Black, where should you shoot first for the highest chance of survival?

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