I shave every day, but my beard stays the same. What am I?

Solve below rebus puzzle?

On her drawing table, Sayna lit 12 coloured candles. A few seconds later she blew two candles off.

How many candles Sayna have at the end?

A King wants to send the diamond ring to his girlfriend securely. He got multiple locks and their corresponding keys. His girlfriend does not have any keys to these locks and if he sends the key without a lock, the key can be copied in the way. How can King send the ring to his girlfriend securely?

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.

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

Can you solve the below tricky visual equation?

In which direction should the missing arrow point?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

My first is in chocolate but not in ham. My second is in cake and also in jam. My third at tea time is easily found. Altogether, this is a friend who is often around. What is it?