Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Two friends decide to get together; so they start riding bikes towards each other. They plan to meet halfway. Each is riding at 6 MPH. They live 36 miles apart. One of them has a pet carrier pigeon and it starts flying the instant the friends start traveling. The pigeon flies back and forth at 18 MPH between the 2 friends until the friends meet.

How many miles does the pigeon travel?

Replace the question mark in the picture below.

By what process could you make a 'Tea-Table' into food?

How many letters are in the alphabet?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

They are three errirs in this question. Can you find them?

John and his wife were living in a rural place. On a particular day, John's wife fell ill and he called the local doctor. When the doctor picked up, he said, "Doctor, my wife is ill. She might have appendicitis."

"This can't be possible! I took out her appendix two years ago myself," the doctor explained.

When diagnosed, John's wife was found to have appendicitis. How can this be possible?

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?