I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

How many letters are in the alphabet?

The sum of a mother, her baby and her dog's weight is 170 Kg. How much does the baby weigh if the mother weighs 100 kg more than the combined weight of the baby and the dog, and the dog weighs 60 per cent less than the baby?

I travel all around the world but always stay in the corner. What am I?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

What is the next number in this series?

4,12,84,3612....

How many times do a clock's hands overlap in a day ?

Suppose that you are trapped on the surface of a frozen lake. The surface is so smooth and ideal that there is no friction at all. You cant make any grip on the ice and no wind is blowing to help you out. You have just a mobile phone with you which has got no reception disabling you to call for help.

How will you plan your escape before you freeze to death on the frozen lake?

A thief enters a store and threatens the clerk, forcing her to open the safe. The clerk says, “The code for the safe is different every day, and if you hurt me you’ll never get the code.” But the thief manages to guess the code on his own. How did he do it?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.