Question

Find the cubes of 10, 30, 100, 1000. What can you say about the zeros at the end?

Answer 1

10³= 10 x 10 x 10 = 1.000 (3 zeros) 

30³ = 30 × 30 × 30 = 27000 (3 zeros) 

100³ = 100 × 100 × 100 = 1000000 (6 zeros) 

1000³ = 1000 × 1000 × 1000 = 1000000000 (9 zeros) 

The number of zeros at the end are always multiple of 3