# 3 minutes solve 5 puzzles, prove you’re smart!

Puzzle 1:

Puzzle:

The rule of the above series of numbers: The previous number minus 4 and then multiplying by 3 will produce the next next number.

(8 – 4) x 3 = 12.

(12 – 4) x 3 = 24.

(24 – 4) x 3 = 60.

(60 – 4) x 3 = 168.

Puzzle 2:

Puzzle:

The rule of the table above: In each row, the first number from the left to divide the middle number will get the last number.

9: 3 = 3.

6: 2 = 3.

8: 4 = 2.

Puzzle 3:

Puzzle:

The rule of the above series of numbers: The number following is equal to the previous number plus the sequence of odd numbers (in increasing order) multiplied by two.

0 + 1^2 = 1.

1 + 3^2 = 10.

10 + 5^2 = 35.

35 + 7^2 = 84.

Verse 4:

Puzzle:

The rule of the above series of numbers: The number of links in odd positions decreases by 2, 3, 4 and 5 units. The number of links in even positions increases by 2, 3, 4 and 5 units.

Fourth link: 2 + 2 = 4.

Sixth link: 4 + 3 = 7.

Eighth link: 7 + 4 = 11.

Tenth link: 11 + 5 = 16.

Question 5:

Puzzle:

The rule of the above calculation: Multiply and divide first, add and subtract later and work from left to right.

7 + 1 + 49 – 7 = 50.