How many words can a pen with half refill write?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

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

A Car driver was heading down a street in Washington. He went right past a stop sign without stopping, he turned left where there was a 'no left turn' sign and he went the wrong way on a one-way street. Then he went on the right side of the road past a cop car. Still, he didn't break any traffic laws. Why not?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

Why Aeroplane windows are round?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

How can you leave a room with two legs and return with six legs?