Question
Balls are arranged in rows to form an equilateral triangle. The first row consists of one ball, the second row of two ball and so on. If 669 more balls are added then all the balls can be arranged in the shape of a square and each of the sides then contains 8 balls less than each side of the triangle did. Determine the initial members of balls.

1366

1540

1233

None of these
easy
Solution
1540
.
.
SIMILAR QUESTIONS
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