Question

Find the least number of five digits exactly divisible by 12,15,18,24​

Answer 1

Answer:

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Byju's Answer

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Standard V

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Mathematics

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Finding LCM of Two Numbers

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Find the leas...

Question

Find the least

5

digit number which is exactly divisible by

12

,

15

and

18

?

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Solution

Find the LCM of

12

,

15

and

18.

It will be

2

×

2

×

3

×

3

×

5

=

180.

The smallest

5

digit number is

10000

;

Now find the multiple of

180

close to

10000.

By observation,

180

×

50

will be

9000

and

180

×

6

=

1080

;

Adding both, I.e,

180

×

56

=

10080

;

Just to check,

180

×

55

=

9900

,

is a

4

digit number.

So,

10080

is the smallest

5

digit number divisible by

12

,

15

and

18.

Answer 2

Answer:

1. Divisible no of 12=1,2,3,4,6
2. ". ". 15=1,3,5,15
3. ____18=1,2,3,6,9
4. """"""""""" """"""""""" 24=1,2,3,4,6