Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

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

You are a prisoner sentenced to death. The Emperor offers you a chance to live by playing a simple game. He gives you 50 black marbles, 50 white marbles, and 2 empty bowls. He then says, 'Divide these 100 marbles into these 2 bowls. You can divide them any way you like as long as you use all the marbles. Then I will blindfold you and mix the bowls around. You then can choose one bowl and remove ONE marble. If the marble is WHITE you will live, but if the marble is BLACK... you will die.'

How do you divide the marbles up so that you have the greatest probability of choosing a WHITE marble?

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

I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

A four-digit number (not beginning with 0) can be represented by ABCD. There is one number such that ABCD=A^B*C^D, where A^B means A raised to the B power. Can you find it?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

I’m tall when I’m young, and I’m short when I’m old. What am I?