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

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An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

Which Travels Faster? Solve below famous picture riddle:

Two men play a dice game involving roll of two standard dice. Man X says that a 12 will be rolled first. Man Y says that two consecutive 7s will be rolled first. The men keep rolling until one of them wins.

What is the probability that X will win ?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

How can one talk without saying a single word?

Prove that twice of ten is the same as twice of eleven.

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?

Below, you can see some coding:
January = 1017
February = 628
March = 1335
April = 145
May = 1353
June = 1064
July = 1074
August = 186

Now deciphering the way it has been coded, can you find out how September will be coded?

Can you write down eight eights so that they add up to one thousand?