Can you fill the blank with the correct number?

6 30 870 756030 _____

Can you place six X (crosses) in below board without making three in a row in any way ?

If 1+9+8=1, what is 2+8+9?

Alex is stranded on an island covered in forest.
One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process.

There are cliffs around the island, so he cannot jump off.

How can the Alex survive the fire? (There are no buckets or any other means to put out the fire)

Decode this picture on T-Shirt and tell what it says ?

In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same colour?

81 x 9 = 801. What must you do to make the this equation true?

He runs but never walks. Murmurs, but never talks. Has a bed, but never sleeps. And has a mouth, but never eats?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?