Can you fill the blank with the correct number?

6 30 870 756030 _____

I left my campsite and hiked south for 3 miles. Then I turned east and hiked for 3 miles. I then turned north and hiked for 3 miles, at which time I came upon a bear inside my tent eating my food! What colour was the bear?

What always comes into a house through the keyhole?

Which tank will fill first?

Jack was having a candle light dinner with his girlfriend. Suddenly a cold gush of wind entered through the open window and three of the ten candles were extinguished. Assuming that none of the other candles were extinguished.

How many candles are they left with in the end ?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

What does this rebus puzzle means ?

Sally lives in a place where six months of the year is mild summer and the temperature drops significantly the other six months. She owns a lake where there is a small island. She wants to build a house on the island and needs to get materials there. She doesn’t have a boat, plane, or anything to transport them to the island. How does Sally solve this problem?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

Can you name four days which start with the letter 'T'?