what's the probability of getting a king or a queen from a pack of 52 cards?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?

What does the below rebus riddle means?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?

Why Aeroplane windows are round?

Can you complete the sequence puzzle?

AR TA GE CA LE VI LI _

What Deficiency does the below rebus represent?

VIT_MIN