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

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

John was going on a jungle trip. He asked his wife to pack something to eat, something to drink and something to burn if he feels cold in the jungle. When John opens the backpack he found just one thing in the bag. What was it?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

Solve the alphametic puzzle by replacing the alphabet with the number.

S T O R M +
S O L E S
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T O W E L
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My grandson is about as many days as my son in weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 120 years. Can you tell me my age in years ?