Real Numbers
Number Theory
Level
2
An 8-digit number is a multiple of 73 and 137.If the second digit from left is 7,then 6th digit from the left of the number is
The answer is 7.
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1 solution
Now 73 and 137 are prime so,there LCM is 73x137=10001 Hence the number is also a multiple of 10001 So,we should multiply it with a 4-digit no.because if you multiply it with 1000,then it will form a 8-digit no. 10001=10000+1 (10000+1)ABCD=ABCD0000+ABCD=ABCDABCD Hence 2nd digit from left will be equal to 6th digit from left hence 6th digit from left is 7