The lcm and hcf of two numbers are 1989 Nd 13 .if one number is117. Find the other
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lcm =1988
and hcf =13
according to formula
= a×b = lcm×hcf
117×b = 1989×13
b = 25857÷117
b = 221
and hcf =13
according to formula
= a×b = lcm×hcf
117×b = 1989×13
b = 25857÷117
b = 221
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