Question

Find the smallest 4 digits number that is exactly divisible by 36,40 and 45

Answer 1

Answer:

1080

Step-by-step explanation:

therefore the lcm of 36 , 40 and 45

are: 36=2*2*3*3

:40= 2*2*2*5

:45= 3*3*5 ,common is three

Now, lcm are 2^2*3^2*2^2*5*3^2*5

therefore , the smallest 4 digits no. that exactly divisible by 36,40 and 45 is

= 3 * 360 = 1080

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