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

Which is faster, Heat or Cold ? Explain.

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

Where do fish keep their money?

What does this rebus means ?

PROG WORKRESS

Two fathers and two sons went fishing one day. They were there the whole day and only caught 3 fish. One father said, that is enough for all of us, we will have one each. How can this be possible?

A mathematics teacher took exams for his students. Out of the total students, 25% passed both the tests included in the exam. However, only 42% were able to clear the first test.

Can you find out the percentage of those students who passed the first test and also passed the second test?

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?