How can you make number one disappear by adding something to it?

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

Count the number of triangles in the picture below:

A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?

What does below chemistry rebus means?

Whats the next number in the below number sequence pattern.

What is the end of everything?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

What jumps when it walks and sits when it stands?

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?