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Question

The sum of three consecutive multiples of 7 is 777. Find the three numbers.

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Solution

Sum of 3 consecutive multiples of 7 is 777
Let the consecutive multiple of 7 be
7n,(7n+7), (7n+14)
7n+(7n+7)+(7n+14)=777
21n+21=777
21n=756 n=36
So No in 252, 259, 266

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