Three ants are sitting at the three corners of an equilateral triangle. Each ant starts randomly picks a direction and starts to move along the edge of the triangle. What is the probability that none of the ants collide?

What does a man do only once in his lifetime, but women do once a year after they are 29?

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

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

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

Different lights make me strange by changing me into different sizes. What am I?

There was a man he lives in a hotel each morning he presses the first floor button each evening if there is a person in the elevator he asks him to press the 10 floor button if there is no one in the elevator he takes the stairs why.

There is a hypothetical state between the USA and Mexico border 'Tango'.
Here 70 percent of the population have defective eyesight, 75 percent are hard of hearing, 80 percent have Nose trouble and 85 percent suffer from allergies, what percentage (at a minimum) suffer from all four ailments?

What is the centre of gravity?