Question Discussion & Solution

CALCULATIONS:

(14 ÷ 2) + 1 = 8

⇒ (8 ÷ 2) + 2 = 6

⇒ (6 ÷ 2) + 1 = 4

⇒ (4 ÷ 2) + 2 = 4

⇒ (4 ÷ 2) + 1 = 3

CALCULATIONS:

11 × 1 + 0 = 11

⇒ 12 × 2 + 5 = 29

⇒ 13 × 3 + 10 = 49

⇒ 14 × 4 + 15 = 71

⇒ 15 × 5 + 20 = 95

Given series:

8, 104, 1144, 8008, ?, 120120

Calculation:

The pattern of the above series is as follows,

Multiplication by prime numbers.

8 × 13 = 104

104 × 11 = 1144

1144 × 7 = 8008

8008 × 5 = 40040 = ?

40040 × 3 = 120120

∴ 40040 will come in place of ?.

The pattern of the series is

6 × 3 + 1 = 19

19 × 3 + 2 = 59

59 × 3 + 3 = 180

180 × 3 + 4 = 544

544 × 3 + 5 = 1637 

Calculation:

The series follows following pattern:

⇒ 5 + 0 = 5

⇒ 5 + 5 = 10

⇒ 10 + 10 = 20

⇒ 20 + 15 = 35

⇒ 35 + 20 = 55

⇒ 55 + 25 = 80

∴ The missing number is 80