Two trains start at the same time, one from Bangalore to Mysore and the other from Mysore to Bangalore. if they arrive at their destinations one hour and four hours respectively after passing one another, how much faster is one train running than the other?

Why Wine Glass Stem is so long?

You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?

DONALD
+GERALD
=ROBERT

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

Can you find the key in the picture below?

What type of tree can I carry in my hand?

What makes this number unique: 8,549,176,320?

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

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?