Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

Count the number of triangles in the given picture.

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

Using Only Five 5's and any mathematical operator make sum as 37

Why is the longest human nose just 11 inches?

Solve the following series:
AZ, GT, MN, __, YB

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

In the image below, you can see two glasses and two matchsticks.You need to move four matchsticks in such a manner that the crosses come inside the glasses. Note: you cannot move the crossed.