Question

5,4,7,20,(?),394 find missing number

Answer 1

Answer:

missing number is 79.

Step-by-step explanation:

⇒ (5 × 1) – 1 = 4

⇒ (4 × 2) – 1 = 7

⇒ (7 × 3) – 1 = 20

⇒ (20 × 4) – 1 = 79

⇒ (79 × 5) – 1 = 394

hope you got it...!