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Daily quiz #7

Answers · Sunday, 25 October 2026

6 questions, easy to hard, then Ivy's pick. Here is every answer, and why.

  1. Question 1

    True or false: the 'five-second rule' means food dropped briefly on the floor stays clean.

    • A. True
    • B. False ✓

    Answer: False. Bacteria transfer on contact, instantly; what matters is how wet the food is and how dirty the floor is. Watermelon picks up more in one second than a dry biscuit does in a minute.

  2. Question 2

    What is the capital of Brazil?

    • A. Rio de Janeiro
    • B. Salvador
    • C. Brasília ✓
    • D. São Paulo

    Answer: Brasília. Built from nothing in 41 months and inaugurated in 1960, shaped like an aeroplane from the air. Rio had been the capital until then.

  3. Question 3

    Which company's 1984 Super Bowl advert, directed by Ridley Scott, aired only once nationally?

    • A. IBM
    • B. Apple ✓
    • C. Nike
    • D. Pepsi

    Answer: Apple. For the Macintosh, with a runner smashing a screen showing Big Brother. The board had hated it and tried to sell the airtime.

  4. Question 4

    Which gymnast scored the first perfect 10 in Olympic history, in 1976?

    • A. Mary Lou Retton
    • B. Olga Korbut
    • C. Simone Biles
    • D. Nadia Comăneci ✓

    Answer: Nadia Comăneci. The Montreal scoreboard could only show three digits, so her 10.00 appeared as 1.00. She was 14 and scored seven perfect 10s at those Games.

  5. Question 5

    Which blues guitarist named every one of his guitars 'Lucille'?

    • A. Buddy Guy
    • B. Muddy Waters
    • C. B.B. King ✓
    • D. John Lee Hooker

    Answer: B.B. King. In 1949 two men fighting over a woman named Lucille knocked over a heater and set a dance hall ablaze; King ran back in for his guitar and named it so he would never do that again.

  6. Ivy's pick

    Why do airlines tell you to open the window blind for take-off and landing?

    • A. To let the sun in
    • B. To balance cabin pressure
    • C. So passengers and crew can see outside in an emergency ✓
    • D. For the pilots' visibility

    Answer: So passengers and crew can see outside in an emergency. Take-off and landing are when most accidents happen; seeing which side has fire or water decides which exits to use. Dimming the lights at night is for the same reason.

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