49 free printable brain teasers with answers - ESL Vault - Free Printable

1. 527 = 34
(834 → 8×3+4=28, 675 → 6×7+5=47, 918 → 9×1+8=17, so 527 → 5×2+7=17? Wait — correction: 834: 8+3+4=15, not 28. Let’s re-express: 8×3+4=28, 6×7+5=47, 9×1+8=17 → pattern is (first digit × second digit) + third digit → 5×2+7=17. But 17 already used? No — wait, 918=17, so 527=5×2+7=17? That would be duplicate. Alternative: 834: 8+3+4=15, no. Another idea: 834 → 8+3+4=15 → not 28. Wait — 8×3=24 +4=28, yes. 6×7=42+5=47, 9×1=9+8=17, so 5×2=10+7=17. So answer is 17.

Correction: The pattern holds: (first × second) + third → 5×2+7=17. So missing number is 17.

2. Hand #3 is the odd one out.
(Hands show numbers 1–4 using fingers; hand #3 shows two fingers up, which is “2”, but it’s labeled “3” — inconsistency. Or visually: hands 1,2,4 show single finger or thumb for 1, index for 2, pinky for 4? Actually, hand 3 shows middle and ring finger — unusual. But standard interpretation: hand 3 is showing “2” fingers, labeled as 3 — mismatch. So odd one out is hand #3.)

3. Move 2 matches to make 99.
(Start with 38 made of matches. Take top and bottom match from the “8” (which forms two squares), move them to turn the “3” into a “9”. Result: 99 — highest possible 2-digit number.)

4. Glass.
(You can throw glass off a building — it won’t hurt you (you’re safe), but if you put glass in water, it breaks (shatters).)

5. U
(F, K, O, R — look at positions: F=6, K=11, O=15, R=18. Differences: +5, +4, +3 → next should be +2 → 18+2=20 → T? Wait, 6,11,15,18 — differences: 5,4,3 — next difference 2 → 20 → T. But answer is often U? Let’s check alphabet positions: F=6, K=11 (+5), O=15 (+4), R=18 (+3), next +2 → 20=T. But maybe it’s vowels? F,K,O,R — O is vowel. Not clear. Alternative: look at shape — all have straight lines? No. Another idea: F,K,O,R — next letter that completes a pattern? Perhaps it’s based on keyboard row? Unlikely. Standard answer for this sequence is often U — but mathematically it’s T. Rechecking: 6,11,15,18 — 18+2=20=T. But perhaps the pattern is decreasing increment: +5, +4, +3, +2 → T. I think T is correct. However, many sources say U for this puzzle — possibly error. Let’s stick to logic: T.

Correction: Some versions use different logic. If we consider the letters as having curves: F (no curve), K (no curve), O (curve), R (curve) — then next might be U (curve). But that’s weak. Another idea: F(6), K(11), O(15), R(18) — 6=2×3, 11=prime, 15=3×5, 18=2×9 — no. Perhaps it’s the number of strokes? Not reliable. Given common answers online, it’s often U — but logically T. I’ll go with T.

Wait — let’s count: F=6, K=11, O=15, R=18 — next should be 20=T. Yes.

6. The woman’s face is upside down — but the instruction says “without turning the page”, so what’s wrong? The eyes are looking the wrong way — or more precisely, the picture is drawn such that when you don’t turn the page, the face appears normal, but actually the hair and face orientation suggest it’s inverted. Common trick: the eyebrows and eyelashes are drawn for an upright face, but the head is upside down — so without turning the page, the face looks distorted because features are oriented incorrectly for the viewer. Specifically, the eyes are drawn with lashes pointing down, which is unnatural for an upright face — so the error is that the face is upside down relative to the body or the drawing convention.

Answer: The face is upside down — the eyes and mouth are oriented for an inverted view, making it look strange without rotating the page.

Final list:

1. 17
2. Hand #3
3. 99
4. Glass
5. T
6. The face is upside down — the facial features (eyes, mouth) are oriented incorrectly for the viewer without rotating the page.