Find the missing term of the sequence 5, 15, 75, 525, 4725,........ ?

Answer: 51975

Pattern: each term is obtained by multiplying the previous term by successive odd numbers starting from 3.

• 5 × 3 = 15

• 15 × 5 = 75

• 75 × 7 = 525

• 525 × 9 = 4725

• 4725 × 11 = 51975

Therefore the missing term is 51975.