Look at the number pattern below. 5, 10, 15, 20, ___ What is the missing number?
Show Worked Solution
Worked Solution
Step 1: Find the rule by subtracting each pair of neighbours.
10 - 5 = 5, 15 - 10 = 5, 20 - 15 = 5.
The pattern increases by 5 each time.
Step 2: Add 5 to the last number.
20 + 5 = 25.
Answer: 25
Correct answer: 25
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