Question

Find the least number that is divisible by all number between 1 to 8 (both inclusive)

Answer 1

Answer:

The least number divisible by all the numbers from 1 to 8 will be the LCM of these numbers.

We have,

1 = 1

2 = 2 × 1

3 = 3 × 1

4 = 2 × 2

5 = 5 × 1

6 = 2 × 3

7 = 7 × 1

8 = 2 × 2 × 2

So, LCM of these numbers = 1 × 2 × 3×2×2×5×2×3×7×2×2×2=40,320

Hence, least number divisible by all the numbers from 1 to 8 is 40,320

Answer 2

Answer:

take LCM like that

Step-by-step explanation:

1=1

2=2×1

3=3×1

4=2×2

5=5×1

6=2×3

7=7×1

8=2×2×2

now LCM-2×2×2×7×5×3=840