I am quite hot but become too cold if you remove the first two letters. What am I?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

Take number 1000 and then add 20 to it.
Now add 1000 one more time.
Now add 30.
Now add 1000 one more time.
Now add 40.
Now add 1000 one more time.
Now add 10.

What is the total?

Can you find out which options fits best with the missing column?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

What's a single-digit number with no value?

John is asked to stand behind Jacob and Jacob is asked to stand behind John. Both of them feel confused about it and don't know what to do?

But it is quite possible, do you know how?

John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?

John gave half of the apples he had plus one more to Jacob. He gave half of the remaining ones plus one more to James. Now, John was left with just one apple.

Can you find out how many did he have in the beginning?

How many letters are in the alphabet?