Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

Can you count the number of lines in the below picture?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?

As a whole I am both
safe and secure.

Behead me and I become
a place of meeting.

Behead me again and I am
the partner of ready.

Restore me, and I become
the domain of beasts.

What am I?

In the image given, you can find several triangles. Can you count them all?

How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?