JEE MATHEMATICS MCQ: SEQUENCE OF SERIES

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Analyzing +4 | -1

Consider the pattern shown below:

\begin{array}{cccccccccccccccccccc} {{\text{Row}}}&{\text{1}}&{\text{1}}&{}&{}&{} \\ {{\text{Row}}}&{\text{2}}&{\text{3}}&{\text{5}}&{}&{} \\ {{\text{Row}}}&{\text{3}}&{\text{7}}&{\text{9}}&{{\text{11}}}&{} \\ {{\text{Row}}}&{\text{4}}&{{\text{13}}}&{{\text{15}}}&{{\text{17}}}&{{\text{19,}}\;\,{\text{etc}}{\text{.}}} \end{array}

The number at end of row 60 is

View answer and explanation

Correct option: A

3659

Option A (3659) is correct because the number at the end of row 60 is calculated using the formula derived from the pattern:

T_n = n^2 + n - 1

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