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ACADIFY · BRAIN CHALLENGE 02

Logic Puzzles
Think Beyond the Obvious.

Test your reasoning, spot hidden relationships, solve tricky situations, and challenge the way you approach problems.

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THINK · REASON · SOLVE

Can you crack the logic?

Read each puzzle carefully. Some questions require careful reasoning rather than quick calculations. Choose the best answer.

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🧩 10 Questions ⏱️ About 15–20 Minutes 🧠 Reasoning Challenge

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1. Three boxes are labelled APPLES, ORANGES, and MIXED. Every label is incorrect. You may pick one fruit from only one box. Which box should you pick from first to correctly identify all three boxes?
2. A person looks at a photograph and says: "I have no brothers or sisters, but that person's father is my father's son." Who is in the photograph?
3. Four students — Riya, Sam, Tina, and Aman — stand in a line. Riya is ahead of Sam, Sam is ahead of Tina, and Tina is ahead of Aman. Who stands second in the line?
4. A clock takes 5 seconds to strike 6 times. Assuming equal time intervals between strikes, how long will it take to strike 12 times?
5. All Zorbs are Mips. All Mips are Tans. Which statement must be true?
6. You have 8 identical-looking balls. One ball is heavier than the other seven. Using a balance scale, what is the minimum number of weighings needed to guarantee finding the heavier ball?
7. In a race, Maya finishes ahead of Neha but behind Priya. Arjun finishes behind Neha. Who finishes first among these four?
8. A farmer has 17 sheep. All but 9 run away. How many sheep remain?
9. Outside a closed room are three switches. Inside is one traditional light bulb. Only one switch controls the bulb. You may operate the switches as you wish, but you may enter the room only once. How can you identify the correct switch?
10. Four people must cross a bridge at night. They take 1, 2, 7, and 10 minutes to cross. Only two people can cross at a time, and they must carry one torch. The torch must always be carried, and a pair moves at the slower person's speed. What is the minimum total time for everyone to cross?

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