Question

Find the least number which on adding 10 is exactly divisible by 10,15,25,30,40 and 45.

Answer 1

by taking LCM OF10,15,25,30,40,45 we get 1800
so the number is 1790.

if we add 10 to 1790 we'll get 1800 which is divisible by 10,15,25,30,40,45.

Answer 2

Answer:

The Least number is 1790.

Step-by-step explanation:

Hey Mate,

Whenever in question talking about least number or smallest number, So we need to find the LCM of the givens numbers. Or whenever  in question talking about largest number or biggest number, So we need to find the HCF of the givens numbers. (#This is very Important point. )

We need to find X number.

LCM = X + 10         (#As given in question)

X = LCM - 10

LCM of 10, 15, 25, 30, 40 and 45 is 1800 (Refer attachment)

So,

X = LCM - 10

X = 1800 - 10

X = 1790.

So,

The Least number is 1790.