Question

find the smallest number of 4 digits which when divided by 6 8 12 and 20 leaves no reminder​

Answer 1

QUESTION : find the smallest number of 4 digits which when divided by 6 8 12 and 20 leaves no reminder

WHAT TO DO : FIND THE LEAST NUMBER

SOLUTION : FIRST WE WOULD FIND THE LCM OF 6 , 8, 12 AND 20

LCM = 120

SMALLEST NUMBER OF 4 DIGITS = LARGEST 4 DIGIT NUMBER ÷ 120

=9999 ÷ 120

QUOTIENT = 83

REMAINDER = 39

SMALLEST 4 DIGIT NUMBER = 9999-39 = 9960

ANSWER : 9960

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