If the sum of numbers (x49)2 and x3 is divisible by 7, then which of the following may be a least value of x?
If the sum of numbers (x49)2 and x3 is divisible by 7, then which of the following may be a least value of x? Correct Answer 3
For x=3, 3492+33 = 121828, is divisible by 7. For x=7, 7492+73 = 561344, is divisible by 7. Therefore, the least value of x is 3.
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Feb 20, 2025