How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

What always comes into a house through the keyhole?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

A clock loses 10 minutes each hour. If the clock is set correctly at noon, what time is it when it reads 3 PM?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

There’s a girl who has a large family. She has an equal amount of brothers and sisters, but each brother only has half as many brothers and sisters. What’s the correct amount of brothers and sisters?

What occurs twice in a week, once in a year but never in a day?

Identify The phrase in the picture.