How many times in a given day, minutes and hour clock comes in a straight line ?

Name a key which is hardest to turn.

When it is alive we sing, when it is dead we clap our hands. What is it?

There are 2 cops parked along a one-way street looking for traffic violations. They spot a taxi driver going in the wrong direction, yet they do nothing.

Why?

A system error causes the change of John's net banking password. To sort this out, he calls the customer care. The following is the conversation he had with the executive:

John: My password has been changed.

Custom Care Executive: We have kept your password distinct this time. It has 8 letters out of which, 3 letters are the same as the previous one.

John: Okay, thanks.

Can you determine the old as well as the new password of John's net banking account after reading the conversation carefully?

Which is the smallest number that you can write using all the vowels exactly once?

what does the below rebus mean?

I can turn polar bears white.
I can make anyone dance.
I can make everyone cry
I can make your hands clap
I can make you thin.
I can make you smile.
I can make you smile

Can you guess the riddle?

Buy me, smell me or deliver me, I do not change.

Who am I?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.