Triangular Numbers 3 – General Rectantangle

Algebra Level 1

For the doubled $n^{\text{th}}$ triangular number, which of the following represents the height of the rectangle we can form?

n

n + 1

2n

n-1

2 solutions

Daniel Liu
Apr 30, 2014

The height is one more than the width. If the width is $n$ , the height must be $n+1$ .

The rule of the second problem of the set is applied.

The height of the rectangle is $1$ more than the width. That's why answer is $\boxed{n + 1}$

Saurabh Mallik - 7 years, 1 month ago

Anuvind Shrivastava
Dec 17, 2014

The answer should be (n+1) because the height of the rectangle is one more than the width of the rectangle and width is n.