Sounds wrong, but is right
Tests: 4 of 11 right · Exam: 1 of 4 right · Kind: ★★★ · Understood: 6 of 15 · Run: 2026-10-18, commit f3c23ea72
Lesson 182 of the world course of Mova's primary school, as Mova's small model took its tests: it had read this lesson and the ones before it and learned from their exercises. Each test shows the options in the order the student saw them, its choice, the right answer, the score of every option and why it chose. The lesson itself, sentence by sentence with trees and pragmatics: the lesson in the corpora.
Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: the lesson's questions in the corpora.
Test 1 · ★★★ · right ✓
Leo: "No way, that's illegal." After 30 rounds, switching won about 20 times. What does this show?
- 1. It is 50/50 and they were just lucky that afternoon — no support
- 2. Staying would have won 20 times out of 30 as well — score 9
- 3. Switching really does win about 2 times in 3 — ← Mova's choice · ✓ the right answer · score 12
- 4. His sister must have been cheating him every round — no support
Why: It took the question to ask what it is done to. It chose option 3 with score 12, against 9 for the next best. Its support: lesson 182, line 5: «In the three-cups game, Leo's first pick is right only 1 time in 3, and his sister lifting an empty cup doesn't change that, so switching wins 2 times in 3. Le…», reached through the remembered sentence the question matched. What matched: the same place «3» (+5); the same action «win» (+4); the same property (+3). · the question and its options parsed, with trees and pragmatics
Test 2 · ★★★ · wrong ✗
What would happen if Leo played 30 rounds and always stayed with his first cup?
- 1. He would win about 15 times, half of them — ← Mova's choice · score 5
- 2. He would win all 30 times in a row — score 5
- 3. He would win only about 10 times — ✓ the right answer · score 5
- 4. He would win about 20 times, like switching — score 5
Why: It took the question to ask what happens next. It chose option 1 with score 5, tied with another option at 5 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 182, line 5: «In the three-cups game, Leo's first pick is right only 1 time in 3, and his sister lifting an empty cup doesn't change that, so switching wins 2 times in 3. Le…», reached through the same lesson line as the sentence the question matched. What matched: the same action «win» (+3); the same property (+2). The right option, 3, scored 5. · the question and its options parsed, with trees and pragmatics
Test 3 · ★★★ · wrong ✗
Two kids in a class of 30 share 14th March. Ruby: "Nah, that's a setup, Miss." What is the fair reply?
- 1. It's a fluke that happens 1 time in 365 — ← Mova's choice · no support
- 2. It's not a setup; with over 400 pairs, a match is likely — ✓ the right answer · no support
- 3. Shared birthdays can't happen in small classes — no support
- 4. It is a setup; you'd need about 180 kids — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Test 4 · ★★★ · right ✓
Mum: "Ten gaps, Pete, eleven posts." How many posts does a 5-metre fence with a post every metre need?
- 1. 6 — ← Mova's choice · ✓ the right answer · no support
- 2. 4 — no support
- 3. 5 — no support
- 4. 10 — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Test 5 · ★★★ · wrong ✗
Ollie's sister: "On day 8 it starts at 7 and climbs to 10. It's out, chilling." If the well were only 5 metres deep, on which day would the snail get out?
- 1. Day 4 — ← Mova's choice · score 4
- 2. Day 3 — ✓ the right answer · score 4
- 3. Day 5 — score 4
- 4. Day 2 — score 4
Why: It took the question to ask where. It chose option 1 with score 4, tied with another option at 4 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 182, line 10: «A snail in a 10-metre well that climbs 3 metres each day and slides 2 each night is 7 metres up after 7 days and nights, and climbs out on day 8.», reached through the option's own match among the sentences about the question's things. What matched: the same doer «snail» (+2); the same property (+2). The right option, 2, scored 4. · the question and its options parsed, with trees and pragmatics
Test 6 · ★★★ · wrong ✗
Grandson: "You were so ready for 8 minutes, Grandad, you even made a tea." How long would it take to cut a log into 6 pieces at 2 minutes a cut?
- 1. 12 minutes — ← Mova's choice · score 7
- 2. 10 minutes — ✓ the right answer · score 7
- 3. 8 minutes — score 7
- 4. 6 minutes — score 7
Why: It took the question to ask what something is like. It chose option 1 with score 7, tied with another option at 7 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 182, line 11: «Cutting a log into 4 pieces takes 3 cuts; at 2 minutes a cut, that is 6 minutes.», reached through the same lesson line as the sentence the question matched. What matched: the same action «take» (+4); the same circumstance (+4). Against it: a different thing acted on (counts against) (-1). The right option, 2, scored 7. · the question and its options parsed, with trees and pragmatics
Test 7 · ★★★ · right ✓
Mia: "It IS maths homework." If the drawer held black, white AND red socks, what is the smallest number to be sure of a pair?
- 1. 4 — ← Mova's choice · ✓ the right answer · no support
- 2. 7 — no support
- 3. 3 — no support
- 4. 6 — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Test 8 · ★★★ · wrong ✗
Friend: "My list is exactly as rare as yours, yours just has a better haircut." What does he mean?
- 1. Ten heads only looks special; each exact list is equally rare — ✓ the right answer · score 1
- 2. Ten heads is far rarer than any mixed list — no support
- 3. Mixed lists of flips are impossible — ← Mova's choice · score 4
- 4. Coins remember what they did last time — no support
Why: It took the question to ask what it is done to. It chose option 3 with score 4, against 1 for the next best. Its support: lesson 182, line 13: «Every exact list of 10 fair coin flips, ten heads or any mixed list, has the same chance: 1 in 1,024.», reached through the remembered sentence the question matched. What matched: the same action «list» (+4); it fills the role the question asks for (+1). Against it: the same thing acted on «10 fair coin flips» (-1). The right option, 1, scored 1. · the question and its options parsed, with trees and pragmatics
Test 9 · ★★★ · right ✓
Ella: "Told ya, it's a paper brick now." How many layers would there be after 8 folds?
- 1. 256 — ← Mova's choice · ✓ the right answer · no support
- 2. 128 — no support
- 3. 16 — no support
- 4. 64 — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Test 10 · ★★★ · wrong ✗
Gran in Bristol: "Lightning never strikes twice, my lover, everyone knows." What is true?
- 1. Lightning only hits places it has never hit — ← Mova's choice · no support
- 2. Lightning never hits the same building again — no support
- 3. The Empire State Building is hit around 20 times a year — ✓ the right answer · no support
- 4. Tall buildings are never hit by lightning — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Test 11 · ★★★ · wrong ✗
In a cartoon a character hides under a tree that lightning has just hit: "Safest spot in the storm, deffo!" Put the cartoon right.
- 1. Lightning only ever hits flat open ground, never trees or houses — ← Mova's choice · score 0
- 2. A struck tree can never be struck again — no support
- 3. Lightning can hit the same tall thing again, so it isn't safe — ✓ the right answer · no support
- 4. It's safe because the tree is already burnt — no support
Why: It took the question to ask which statement is true. It chose option 1 with score 0, the only option with support. Its support: lesson 68, line 2: «Lightning is so hot, hotter than the surface of the Sun, that it can split trees and start fires, and it strikes the tallest and nearest paths to the ground, s…», reached through the option's own match among the sentences about the question's things. What matched: the same doer «lightning» (+1). Against it: a different action (counts against) (-1). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics
Exam question 1 · formal language · wrong ✗
It is given that a fence of ten metres in length is to be constructed with a post at every metre, inclusive of both ends. Determine the number of posts required.
- 1. Ten — ← Mova's choice · no support
- 2. Twenty — no support
- 3. Eleven — ✓ the right answer · no support
- 4. Nine — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Exam question 2 · formal language · right ✓
A snail situated at the bottom of a well ten metres deep ascends three metres during each day and descends two metres during each night. Ascertain the day on which it emerges from the well.
- 1. The eighth day — ← Mova's choice · ✓ the right answer · no support
- 2. The seventh day — no support
- 3. The tenth day — no support
- 4. The fifth day — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Exam question 3 · formal language · wrong ✗
Select the response that is consistent with the established facts concerning a group of thirty persons and the sharing of a birthday.
- 1. The probability is precisely one in three hundred and sixty-five — ← Mova's choice · no support
- 2. It is more probable than not that at least two persons share a birthday — ✓ the right answer · no support
- 3. At least one hundred and eighty persons would be required — no support
- 4. It is impossible for any two persons to share a birthday — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Exam question 4 · formal language · wrong ✗
Determine the minimum number of socks which must be withdrawn from a darkened drawer containing socks of two colours only in order to guarantee a matching pair.
- 1. Four — ← Mova's choice · no support
- 2. Two — no support
- 3. Three — ✓ the right answer · no support
- 4. Twenty — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
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