Question

Find the greatest 5- five digit number which is divisible by 12, 18 and 20​

Answer 1

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LCM of 12, 18, 20 is 360

The greatest five digit number is 99999

Divide the LCM by that number

Which is,

$99999 \div 360$

$= 277$

It leaves the remainder 279

WE HAVE TO IGNORE THE REMAINDER AND MULTIPLY THE QUOTIENT BY THE LCM

$\implies360 \times 277$

THE ANSWER IS 99,720 WHICH IS THE GREATEST POSSIBLE 5-DIGIT NUMBER DIVISIBLE BY 12, 18 AND 20

Answer 2

ANS: 2

because 2

divide ➗ fro. all of this

1) 2÷12 = 6

2) 2÷18= 9

2÷20= 10