During which month do people sleep the least?

I want to fill my bucket using both cold and hot water.
I have two taps for both cold and hot water. The hot water tap fills the bucket in exact 6 hours and the cold water tap fills the bucket in exact 4 hours.
I turn both of them simultaneously but I forgot to turn off another tap which removes the water out of the bucket. This tap can empty the bucket in 12 hours.

How Long will it take to fill the bucket?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

You have to put a letter on the following to make it a meaningful word. The only challenge is that you can't use 'E'.

S E Q U E N C _

What number comes next in the series?

5 15 5 18 5 24 14 20 _

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

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

How many triangles can you find in this given picture?

Doctor Alex and a bus driver John are both in love with the same woman named Olivia. The bus driver need to go for a long trip of 10 days, Before he left he gave Olivia 10 apples.

Find the next number in the sequence

1, 2, 6, 21, 88, __?