Question

Find the least no. Which is divisible by all no. From 1 to 10

Answer 1

there are 10 numbers including 1 and 10

1 2 3 4 5 6 7 8 9 10

all numbers are divisible by 1

numbers divisible by 8 are also divisible by 2 and 4

numbers divisible by 9 are also divisible by 3 and 6

so, eliminate the common factors

so, 5 7 8 and 9 are the unique ones

so, 5*6*8*9=2520

Answer 2

Hey,

Your answer is here,

The least number divisible by all the numbers from 1 to 10 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

9 = 3 × 3

10 = 2 × 5

So, LCM of these numbers = 1 × 2 × 2 × 2 × 3 × 3 × 5 × 7 = 2520

Hence, least number divisible by all the numbers from 1 to 10 is 2520

Hope it helps you ☺️