Consider the following statements in respect of the expression Sₙ = n(n + 1)/2 where n is an integer:
1. There are exactly two values of n for which Sₙ = 861.
2. Sₙ = S_(n + 1) and hence for any integer m, we have two values of n for which Sₙ = m.
Which of the above statements is/are correct?
Mathematics
2016
CDS Elementary Mathematics 2016
CDS 2016
Options
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