Let x denote the greatest 4-digit number which when divided by 6, 7, 8, 9 and 10 leaves a remainder of 4, 5, 6 7 and 8 respectively. Then, the sum of the four-digits of x is
The least number which when divided by 6, 7, 8, 9 and 10 leaves a remainder of 4, 5, 6 7 and 8 respectively is LCM(6, 7, 8, 9, 10) -2
=2520-2= 2518
The number will be in the form of k *Â LCM(6, 7, 8, 9, 10) -2
When k = 3, the value of x =7558
When k = 4, the value of x =10078
So the value of x = 7558
Sum of the digits of x = 7+5+5+8= 25
A is the correct answer.
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