Question

Let a sequence of number be as follows:
If $t_n$ is the first term of nth row then $\sqrt{t_n}-n$ is equal to:

Answer 1

$1$

$3$ $5$

$7$ $9$ $11$

$13$ $15$ $17$ $19$

$21$ $23$ $25$ $27$ $29$

$t_n$ is first term of $n^{th}$ row

$t_n=n(n-1)+1$

$\sqrt{t_n-n}=\sqrt{n^2-n+1}-n$