What is the next number in the series: 10, 20, 30, 50, ...? (2023)

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Question: What is the next number in the series: 10, 20, 30, 50, ...? (2023)

Options:

Correct Answer: 80

Exam Year: 2023

Solution:

The series adds 10, 10, and then 20. The next addition is 30, so 50 + 30 = 80.

What is the next number in the series: 10, 20, 30, 50, ...? (2023)

What is the next number in the series: 10, 20, 30, 50, ...? (2023)

Step 1: Look at the series of numbers: 10, 20, 30, 50.
Step 2: Find the difference between the numbers: 20 - 10 = 10, 30 - 20 = 10, 50 - 30 = 20.
Step 3: Notice the pattern in the differences: the first two differences are 10, and the next difference is 20.
Step 4: The next difference should be 30, following the pattern of increasing differences (10, 10, 20, ...).
Step 5: Add this next difference (30) to the last number in the series (50): 50 + 30 = 80.
Step 6: Therefore, the next number in the series is 80.

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