Brain Teasers for Students | Grade 11 Logic Quiz
20 Grade 11 brain teasers quiz with answers! Logic puzzles, lateral thinking, math riddles for high school SAT/ACT prep. 70% PASS score. Boost critical thinking for 11th graders. Free printable!
Get daily quizzes, practice tests, and free learning updates.
Join WhatsApp ChannelGrade 11 Brain Teasers Quiz for Students with Explanations
Grade 11 brain teasers challenge high school logic skills! 20 puzzles with solutions: sheep riddle, light switch puzzle, jug problem & more. Perfect SAT/ACT critical thinking practice!
Results
Outstanding brainpower, Grade 11 student!
You’ve conquered logic puzzles, lateral thinking, and math riddles that challenge even college students.
Keep sharpening those critical thinking skills — you’re ready for SAT/ACT logic sections!
More Quizzes – Click Here.
Perfect practice makes perfect.
Brain teasers build pattern recognition and creative problem-solving through repetition.
Review solutions carefully — you’ll master them next round!
More Quizzes – Click Here.
#1. Girl has equal brothers/sisters, brother has half brothers as sisters. Total kids?
Explanation: 4 girls see 3 sisters + 3 brothers; 3 boys see 2 brothers + 4 sisters.
#2. Travels world staying in corner?
Explanation: Postage stamp stays in envelope corner during global mail.
#3. Truck driver wrong way one‑way street, no ticket?
Explanation: Driver on foot, not driving truck.
#4. Forward heavy, backward not?
Explanation: “Ton” heavy; backward spells “not.”
#5. Many keys can’t open locks?
Explanation: Musical keys play notes, not unlock doors.
#6. 3L+5L jugs get 4L?
Explanation: Jug capacities measure exactly 4L.
#7. Gets wetter the more it dries?
Explanation: Towel absorbs water while drying others, becoming wetter.
#8. Not alive but grows, needs air no lungs, water kills it?
Explanation: Fire grows with oxygen, dies from water.
#9. Broken before use?
Explanation: Break eggshell to cook/eat inside.
#10. Boat filled with people, no single person aboard. Why?
Explanation: “Single” means unmarried, not one person. Wordplay puzzle!
#11. Can’t talk but replies?
Explanation: Echo repeats your voice in large spaces.
#12. Once in minute, twice in moment, never thousand years?
Explanation: Spelling: miNute (1M), moMent (2M), thousand years (0M).
#13. Doctor: “Can’t operate, my son” but not father?
Explanation: Challenges doctor gender assumption.
#14. “No brothers/sisters, that man’s father is my father’s son”?
Explanation: “My father’s son” = himself; photo shows his child.
#15. A farmer has 17 sheep. All but 9 die. How many left?
Explanation: “All but 9 die” means 9 survive. Classic wording trick tests careful reading!
#16. 3 switches 3 bulbs, one door trip?
Explanation: Lit=switch 2, warm off=switch 1, cold off=switch 3.
#17. One eye can’t see?
Explanation: Needle’s thread hole = eye.
#18. Two’s company, three’s crowd, four+five?
Explanation: Math trick: 4 + 5 = 9.
#19. Finishes 2nd in race, you pass him. Your place?
Explanation: Passing 2nd runner makes you 2nd place.
#20. Up/down never moves?
Explanation: People go up/down; stairs stay fixed.
More Quizzes –
| Grade 10 Vocabulary Practice | Click Here |
| US History Practice Test Grade 9 | Click Here |