Can you fill the blank with the correct number?

6 30 870 756030 _____

How many triangles can you count in the figure given?

Its something that each of us devours,
Not just us but birds, beats, trees, and flowers,
Frets iron and nibbles steel,
Toil hard stones to meal,
Exterminates king, collapse town,
And blows the mountains down.

John was drowned by he was not wet. How?

John bought 150 chocolates but he misplaced some of them. His Father asked him how many chocolates were misplaced.
He gave the following answer to him:
If you count in pairs, one remains
If you count in threes, two remain
If you count in fours, three remain
If you count in fives, four remain
If you count in sixes, five remain
If you count in sevens, no chocolate remains.

Can you analyze the statements and tell us how many chocolates were lost?

If an electric train is travelling south, then which way is the smoke going?

Identify the hidden meaning behind this picture?

Find the missing letter in the last circle logically in the given below picture.

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

One night, Louis and Adam were sitting together. Adam was watching a movie while his wife Louis was reading a mystery book. Suddenly the power went out and Adam decided to go to bed, but strangely Louis kept on reading. There was no artificial light around, so Louis kept on reading. How come?