The more of this there is, the less you see. What is it?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

You have to fill the below given grid in a manner that every row and column contains the digits 1 to 6. Also, make sure that the squares that are connected with each other must contains the same digit.

Can you spot the man between the coffee bean in the picture below ?

What word is represented by this rebus?

A lion and its tamer are standing inside a cage that measures 1 unit in radius. Both of them can effortlessly run at the speed of 1 unit maximum.

1) Suppose the lion is hungry, will he be able to eat up the tamer?
2) If yes, how long can the tamer survive?

Only one colour, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

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

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

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