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Missing Number · IB ACIO · Question 2 of 38

Missing Number: Find the missing number in the sequence: 5, 10, 15, ?, 25, 30

Step-by-step solution. Missing Number for IB ACIO.

Topic
Missing Number
Subject
Reasoning
Difficulty
medium
Solve Time
45-60 sec

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Q · Missing Numbermedium · 45s

Find the missing number in the sequence: 5, 10, 15, ?, 25, 30

TopicMissing Number
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.25
Test Duration30 min

Step-by-Step Solution

The complete worked solution.

Every step explained - no skipped algebra.

The sequence increases by 5 each time. After 15, the next number is 20.

Final Answer: Option B - 20
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Find the missing number in the sequence: 5, 10, 15, ?… - Missing Number (Reasoning) Solved Question