a) 1, 3, 6, 9, 12, 15…..
b) 1, 3, 6, 10, 15, 21……
c) 1, 6, 12, 18, 24…..
d) none of the mentioned
Which of the following is a Triangular number series?
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answerhappygod
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Which of the following is a Triangular number series?
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