---
title: Identify the principal error in the assertion that tails is "due" af… — "I'm due a win": the gambler's fallacy · tree and pragmatics
description: Identify the principal error in the assertion that tails is "due" after five consecutive heads with a fair coin. Exam question 1 of lesson 171 «"I'm due a win": the gambler's fallacy» of the world course of Mova's primary school, with the dependency tree and pragmatics of the question and of each op
---

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# Exam question 1 · "I'm due a win": the gambler's fallacy

<!-- .ven lang=en -->
Identify the principal error in the assertion that tails is "due" after five consecutive heads with a fair coin.

<!-- .vintro -->
**Mova's choice:** option 3 · **The right answer:** option 3 · right ✓ · **Who acts:** you, assertion · **What happens:** identify, be · **To what, where:** principal error, assertion

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This is exam question 1 of lesson 171 «"I'm due a win": the gambler's fallacy» of the world course of Mova's primary school, asked in stiff, formal language. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/world/171-im-due-a-win-the-gamblers-fallacy/#e1).

## The question {#question}

```conllu
# sent_id = question:world:171-im-due-a-win-the-gamblers-fallacy:e1:1
# text = Identify the principal error in the assertion that tails is "due" after five consecutive heads with a fair coin.
1	Identify	identify	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
3	principal	principal	ADJ	JJ	Degree=Pos	4	amod	_	_
4	error	error	NOUN	NN	Number=Sing	1	obj	_	_
5	in	in	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	assertion	assertion	NOUN	NN	Number=Sing	1	obl	_	_
8	that	that	PRON	WDT	PronType=Rel	12	nsubj	_	_
9	tails	tail	NOUN	NNS	Number=Plur	12	nsubj	_	_
10	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	12	cop	_	_
11	"	"	PUNCT	``	_	12	punct	_	SpaceAfter=No
12	due	due	ADJ	JJ	Degree=Pos|ExtPos=ADP	7	acl:relcl	_	SpaceAfter=No
13	"	"	PUNCT	''	_	12	punct	_	_
14	after	after	ADP	IN	_	17	case	_	_
15	five	five	NUM	CD	NumForm=Word|NumType=Card	17	nummod	_	_
16	consecutive	consecutive	ADJ	JJ	Degree=Pos	17	amod	_	_
17	heads	head	NOUN	NNS	Number=Plur	1	obl	_	_
18	with	with	ADP	IN	_	21	case	_	_
19	a	a	DET	DT	Definite=Ind|PronType=Art	21	det	_	_
20	fair	fair	ADJ	JJ	Degree=Pos	21	amod	_	_
21	coin	coin	NOUN	NN	Number=Sing	1	obl	_	SpaceAfter=No
22	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **identify** | imperative | you *not said here* | the principal error |  | the assertion | after five consecutive heads | with a fair coin | vn characterize-29.2-1-1 «NP V NP S\_ING»: agent=Agent error=Theme |
| 2 | **is** *in a quote* | present | the assertion |  |  |  |  | due *property* | tree rules |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

## The options {#options}

### Option 1 {#o1}

<!-- .ven lang=en -->
The coin is likely to be weighted

```conllu
# sent_id = question:world:171-im-due-a-win-the-gamblers-fallacy:e1:o1:1
# text = The coin is likely to be weighted
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	coin	coin	NOUN	NN	Number=Sing	4	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
4	likely	likely	ADJ	JJ	Degree=Pos	0	root	_	_
5	to	to	PART	TO	_	7	mark	_	_
6	be	be	AUX	VB	VerbForm=Inf	7	aux:pass	_	_
7	weighted	weight	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	4	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | the coin |  |  |  |  | likely *property* | tree rules |
| 2 | **weight** | to-infinitive · passive | the coin *not said here* |  |  |  |  |  | vn equip-13.4.2-1-1 «NP.theme V NP» |

### Option 2 {#o2}

<!-- .ven lang=en -->
Five heads constitute an insufficient sample

```conllu
# sent_id = question:world:171-im-due-a-win-the-gamblers-fallacy:e1:o2:1
# text = Five heads constitute an insufficient sample
1	Five	five	NUM	CD	NumForm=Word|NumType=Card	2	nummod	_	_
2	heads	head	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	constitute	constitute	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	an	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
5	insufficient	insufficient	ADJ	JJ	Degree=Pos	6	amod	_	_
6	sample	sample	NOUN	NN	Number=Sing	3	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **constitute** | present | Five heads | a insufficient sample |  |  |  |  | vn comprise-107.2-1 «NP V NP»: agent=Theme sample=Pivot |

### Option 3 · ← Mova's choice · ✓ the right answer {#o3}

<!-- .ven lang=en -->
The coin retains no memory of prior outcomes

```conllu
# sent_id = question:world:171-im-due-a-win-the-gamblers-fallacy:e1:o3:1
# text = The coin retains no memory of prior outcomes
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	coin	coin	NOUN	NN	Number=Sing	3	nsubj	_	_
3	retains	retain	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	no	no	DET	DT	PronType=Neg	5	det	_	_
5	memory	memory	NOUN	NN	Number=Sing	3	obj	_	_
6	of	of	ADP	IN	_	8	case	_	_
7	prior	prior	ADJ	JJ	Degree=Pos	8	amod	_	_
8	outcomes	outcome	NOUN	NNS	Number=Plur	5	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **retain** | present | the coin | no memory of prior outcomes |  |  |  |  | tree rules |

### Option 4 {#o4}

<!-- .ven lang=en -->
Tails cannot occur after heads

```conllu
# sent_id = question:world:171-im-due-a-win-the-gamblers-fallacy:e1:o4:1
# text = Tails cannot occur after heads
1	Tails	tail	NOUN	NNS	Number=Plur	4	nsubj	_	_
2	can	can	AUX	MD	VerbForm=Fin	4	aux	_	SpaceAfter=No
3	not	not	PART	RB	Polarity=Neg	4	advmod	_	_
4	occur	occur	VERB	VB	VerbForm=Inf	0	root	_	_
5	after	after	ADP	IN	_	6	case	_	_
6	heads	head	NOUN	NNS	Number=Plur	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **occur** | can | Tails |  |  |  | after heads |  | vn occur-48.3-1 «NP V»: agent=Theme |

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**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

<!-- /div -->

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- ← previous: ["I'm due a win": the gambler's fallacy, test 11](https://md.mova.elamur.ai/free/en/corpora/questions/world/171-im-due-a-win-the-gamblers-fallacy/t11/)
- next →: ["I'm due a win": the gambler's fallacy, exam 2](https://md.mova.elamur.ai/free/en/corpora/questions/world/171-im-due-a-win-the-gamblers-fallacy/e2/)
- ↑ back to ["I'm due a win": the gambler's fallacy](https://md.mova.elamur.ai/free/en/corpora/questions/world/171-im-due-a-win-the-gamblers-fallacy/)

