Tables, rows, and columns concept in Intro to Computing - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Understanding Table Structure

Imagine a table like a classroom seating chart. Which part of the table corresponds to the students sitting in a single row?

A A single column representing all students in one seat position across rows

B The entire table representing all students in the classroom

C A single cell representing one student

D A single row representing all students sitting side by side in one line

💡 Hint

Think about how students sit side by side in a row.

A row in a table is like a line of students sitting side by side. Each row holds multiple cells (students), arranged horizontally.

❓ trace

intermediate

Counting Rows and Columns

Given a table with 5 rows and 4 columns, how many cells does the table contain in total?

A 20 cells

B 1 cell

C 10 cells

D 9 cells

💡 Hint

Multiply the number of rows by the number of columns.

The total number of cells in a table is rows multiplied by columns: 5 × 4 = 20.

❓ identification

advanced

Identifying Rows and Columns in a Table Diagram

Look at the table diagram below:

Table:

  | Name  | Age | City   |
--+--------+-----+--------+
1 | Alice  | 30  | Paris  |
2 | Bob    | 25  | London |
3 | Carol  | 27  | Berlin |

Which of the following is the second column?

A "Name" column

B "Age" column

C Row 2

D "City" column

💡 Hint

Count columns from left to right starting after the row number.

The second column after the row number is "Age".

❓ Comparison

advanced

Difference Between Rows and Columns

Which statement correctly describes the difference between rows and columns in a table?

A Rows run vertically and columns run horizontally

B Rows and columns both run horizontally

C Rows run horizontally and columns run vertically

D Rows and columns both run vertically

💡 Hint

Think about how you read a table from left to right and top to bottom.

Rows run left to right (horizontally), columns run top to bottom (vertically).

🚀 Application

expert

Calculating Missing Table Dimensions

You have a table with 48 cells. You know it has 6 columns. How many rows does it have?

A 8 rows

B 6 rows

C 54 rows

D 42 rows

💡 Hint

Divide total cells by number of columns to find rows.

Rows = Total cells ÷ Columns = 48 ÷ 6 = 8 rows.