Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

Which is the smallest number that you can write using all the vowels exactly once?

Shyla was sleeping in her apartment when suddenly a robber broke into her house. He asked her to stay quiet and started looting the cash and jewelry. Suddenly the landline phone started ringing. The robber pointed a gun at Shyla and asked her to pick up and talk without giving away the situation.

She picked up the phone and it happened to be her husband. She spoke, Is it an emergency darling? Do give me a call when your flight lands, I will prepare your favorite food that will help you relieve the stress. Then she hanged up.

10 minutes after, the police arrive at the scene and catch the robber. How did the police know about the robbery?

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

What is the longest word in the dictionary?

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

10+10 and 11+11 can give you the same answer.

Explain how?

You need to arrange three 7 and mathematical symbols to form number 1?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

What has a ring but no finger?