What has no start, end, or centre?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

15 caves are arranged in a circle at the temple of doom. One of these caves has the treasure of gems and wealth. Each day the treasure keepers can move the treasure to an adjacent cave or can keep it in the same cave. Every day two treasure seekers visit the place and have enough time to enter any two caves of their choice.

How do the treasure seekers ensure that they find the treasure in the minimum number of possible days?

What number should come in place of the question mark below?

What does it mean?

How is a fly different from a mosquito?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

Can you discover the missing number in this series?

37, 10, 82
29, 11, 47
96, 15, 87
42, ?, 15

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

Do You See It?