Find the missing number in the sequence: 5, 10, 20, 40, ?

Answer as guest — Start Free Practice Test to earn Practice PointsHow to earn pointsAsk a question+3Answer a question+1Someone answers yours+1Your Q gets upvoted+1Pioneer bonus (first 5)+51 point = ₹1 discount on purchases, ask questions & climb the leaderboard!

• A 80
• B 60
• C 100
• D 120

Submit Answer

Show answer and explanation

Answer: A. 80

Each number is multiplied by 2: 5, 10, 20, 40, so the next number is 40 × 2 = 80.

Answering after opening this box earns no Practice Points.