a) 2 × 3 × 4 × 8 × 50 × 25 × 125
Giải thích
2 × 3 × 4 × 8 × 50 × 25 × 125
= 3 × ( 2 ×50 ) × ( 4 × 25) × ( 8 × 125) ( 0,5đ)
= 3 × 100 × 100 × 1000
= 30.000.000
2 × 3 × 4 × 8 × 50 × 25 × 125
= 3 × ( 2 ×50 ) × ( 4 × 25) × ( 8 × 125) ( 0,5đ)
= 3 × 100 × 100 × 1000
= 30.000.000