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MATH / The first 15 numbers of an arrangement are shown below. What would be the value of the 30^(th) number if the arrangement were continued? …

Problem

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problem

The first 1515 numbers of an arrangement are shown below. What would be the value of the 30th30^{\mathrm{th}} number if the arrangement were continued? \begin{align*} &\text{Row }1: 1\\ &\text{Row }2: 2, 2\\ &\text{Row }3: 3, 3, 3\\ &\text{Row }4: 4, 4, 4, 4\\ &\text{Row }5: 5, 5, 5, 5, 5 \end{align*}
Plain-text mathematical notation (without MathML)
The first 15 numbers of an arrangement are shown below. What would be the value of the 30^(th) number if the arrangement were continued? \begin{align*}
&\text{Row }1: 1\\
&\text{Row }2: 2, 2\\
&\text{Row }3: 3, 3, 3\\
&\text{Row }4: 4, 4, 4, 4\\
&\text{Row }5: 5, 5, 5, 5, 5
\end{align*}
Original LaTeX notation
The first $15$ numbers of an arrangement are shown below. What would be the value of the $30^{\mathrm{th}}$ number if the arrangement were continued? \begin{align*}
&\text{Row }1: 1\\
&\text{Row }2: 2, 2\\
&\text{Row }3: 3, 3, 3\\
&\text{Row }4: 4, 4, 4, 4\\
&\text{Row }5: 5, 5, 5, 5, 5
\end{align*}

level

Level 2

type

Prealgebra

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Source and history

task_id
45996f62-aabf-52cc-abb0-9a13ba0a20f3
task_key
prealgebra--test--45996f62-aabf-52cc-abb0-9a13ba0a20f3
task_revision_id
1
config / split
prealgebra / test

Official source

initial import