Number Puzzles

[Masuma Parvin]

By using your numerical and logical reasoning skills please try to figure out which number is missing in the questions below. The numbers around will give you the clues you need to solve the puzzle.

[Masuma Parvin]

Answer : 6

Explanation :

Looking at the diagram in rows, the central circle equals half the sum of the numbers in the other circles to the left and right of the centre.

[Masuma Parvin]

Problem 2:

[Masuma Parvin]

Problem 2:
Answer : 9

Explanation :

The number at the centre of each triangle equals the sum of the lower two numbers minus the top number.