what is meant by triangular numbers ?
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A triangular number is a number that can be represented by a pattern of dots arranged in an equilateral triangle with the same number of dots on each side. The first triangular number is 1, the second is 3, the third is 6, the fourth 10, the fifth 15, and so on
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Answer:
A triangular number is a number that can be represented by a pattern of dots arranged in an equilateral triangle with the same number of dots on each side.
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