Question

Determin the greatest 3-digit number exactly divisible by 8, 10 and 12.​

Answer 1

Answer:

990

Step-by-step explanation:

For that, the best way is LCM

2 | 8, 10, 12

2 | 4, 5, 6

2 | 2, 5, 3

3 | 1, 5, 3

5 | 1, 5, 1

1, 1, 1

LCM of 8, 10 and 12 = 2 × 2 × 2 × 3 × 5

= 90

Table of 90

90 × 1 = 90

90 × 2 = 180

90 × 3 = 270

90 × 4 = 360

90 × 5 = 450

90 × 6 = 540

90 × 7 = 630

90 × 8 = 720

90 × 9 = 810

90 × 10 = 900

90 × 11 = 990

90 × 12 = 1080

ஃ 990 is the greatest 3-digit number exactly divisible by 8, 10 and 12.