How do you go from 98 to 720 using just one letter?

What is the largest number you can write with just 3 digits?

A woman is sitting in her hotel room and hears a knock at the door. She opens the door to see a man whom she’s never met before. He says, “I’m sorry, I have made a mistake, I thought this was my room.” He then goes down the corridor and into the elevator. The woman goes back into her room and calls security. What made the woman so suspicious of the man?

The peacock is a bird that does not lay eggs. How do they get baby peacocks?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

what does the below rebus means?

Identify The phrase in the picture.