Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

Move three sticks of the spiral below to form a square.

What time is it when an elephant sits on a fence?

What does the below image rebus riddle means ?

How can I get the answer 24 by only using the numbers 8,8,3,3?

You can use the main signs add, subtract multiply and divide.

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

The answer I give is yes, but what I mean is no. What was the question?

How many Watermelons are there in the below picture?

Can you count the number of triangles inside a triangle?