If the mean of five numbers is 20, what is their total sum? (2020)

₹0.0

Question: If the mean of five numbers is 20, what is their total sum? (2020)

Options:

Correct Answer: 80

Exam Year: 2020

Solution:

Mean = Total Sum / Number of Items. Therefore, Total Sum = Mean * Number of Items = 20 * 5 = 100.

If the mean of five numbers is 20, what is their total sum? (2020)

If the mean of five numbers is 20, what is their total sum? (2020)

Step 1: Understand what 'mean' means. The mean is the average of a set of numbers.
Step 2: Know the formula for mean: Mean = Total Sum / Number of Items.
Step 3: Identify the mean given in the question, which is 20.
Step 4: Identify the number of items, which is 5 (since there are five numbers).
Step 5: Rearrange the formula to find Total Sum: Total Sum = Mean * Number of Items.
Step 6: Substitute the values into the formula: Total Sum = 20 * 5.
Step 7: Calculate the total sum: 20 * 5 = 100.

Mean Calculation – Understanding that the mean is calculated by dividing the total sum by the number of items.
Basic Arithmetic – Applying multiplication to find the total sum from the mean and the number of items.