Question

1, 5, 30, 210, 1680, _____, _____ what are the next 2 terms

Answer 1

1

1 × 5 = 5

5 × 6 = 30

30× 7 = 210

210 × 8 =1680

1680 × 9 = 15120

15120 × 10 = 151200

1, 5, 30, 210, 1680, 15120 , 151200 .