---
title: Count them: in binary, each switch is on or off. How many different… — Computers and screens · tree and pragmatics
description: Count them: in binary, each switch is on or off. How many different patterns can 2 switches make? Test 7 · ★★ of lesson 36 «Computers and screens» of the technology course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was wrong.
---

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# Test 7 · ★★ · Computers and screens

<!-- .ven lang=en -->
Count them: in binary, each switch is on or off. How many different patterns can 2 switches make?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 2 · wrong ✗ · **Who acts:** you, switch, many different patterns · **What happens:** count, be, make · **To what, where:** them

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This is test 7 · ★★ of lesson 36 «Computers and screens» of the technology course of Mova's primary school. 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/technology/36-computers-and-screens/#t7).

## The question {#question}

<!-- .note -->
*Sentence 1:* Count them: in binary, each switch is on or off.

```conllu
# sent_id = question:technology:36-computers-and-screens:t7:1
# text = Count them: in binary, each switch is on or off.
1	Count	count	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	1	obj	_	SpaceAfter=No
3	:	:	PUNCT	:	_	5	punct	_	_
4	in	in	ADP	IN	_	5	case	_	_
5	binary	binary	NOUN	NN	Number=Sing	1	parataxis	_	SpaceAfter=No
6	,	,	PUNCT	,	_	10	punct	_	_
7	each	each	DET	DT	PronType=Tot	8	det	_	_
8	switch	switch	NOUN	NN	Number=Sing	10	nsubj	_	_
9	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	10	cop	_	_
10	on	on	ADV	RB	_	5	conj	_	_
11	or	or	CCONJ	CC	_	12	cc	_	_
12	off	off	ADV	RB	_	10	conj	_	SpaceAfter=No
13	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **count** | imperative | you *not said here* | them *= they* |  |  |  |  | vn multiply-108 «NP V NP»: agent=Agent they=Theme |
| 2 | **is** | present | each switch |  |  |  |  | on *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.

<!-- .note -->
*Sentence 2:* How many different patterns can 2 switches make?

```conllu
# sent_id = question:technology:36-computers-and-screens:t7:2
# text = How many different patterns can 2 switches make?
1	How	how	ADV	WRB	PronType=Int	2	advmod	_	_
2	many	many	ADJ	JJ	Degree=Pos	4	amod	_	_
3	different	different	ADJ	JJ	Degree=Pos	4	amod	_	_
4	patterns	pattern	NOUN	NNS	Number=Plur	8	nsubj	_	_
5	can	can	AUX	MD	VerbForm=Fin	8	aux	_	_
6	2	2	NUM	CD	NumForm=Digit|NumType=Card	7	nummod	_	_
7	switches	switch	NOUN	NNS	Number=Plur	8	nsubj	_	_
8	make	make	VERB	VB	VerbForm=Inf	0	root	_	SpaceAfter=No
9	?	?	PUNCT	.	_	8	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | can | many different patterns |  |  |  |  |  | vn build-26.1-1 «NP.asset V NP»: agent=Asset |

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
8

```conllu
# sent_id = question:technology:36-computers-and-screens:t7:o1:1
# text = 8
1	8	8	NUM	CD	NumForm=Digit|NumType=Card	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 2 · ✓ the right answer {#o2}

<!-- .ven lang=en -->
4

```conllu
# sent_id = question:technology:36-computers-and-screens:t7:o2:1
# text = 4
1	4	4	NUM	CD	NumForm=Digit|NumType=Card	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 3 {#o3}

<!-- .ven lang=en -->
3

```conllu
# sent_id = question:technology:36-computers-and-screens:t7:o3:1
# text = 3
1	3	3	NUM	CD	NumForm=Digit|NumType=Card	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 4 {#o4}

<!-- .ven lang=en -->
2

```conllu
# sent_id = question:technology:36-computers-and-screens:t7:o4:1
# text = 2
1	2	2	NUM	LS	NumForm=Digit|NumType=Card	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

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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.

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- ← previous: [Computers and screens, test 6](https://md.mova.elamur.ai/free/en/corpora/questions/technology/36-computers-and-screens/t6/)
- next →: [Computers and screens, test 8](https://md.mova.elamur.ai/free/en/corpora/questions/technology/36-computers-and-screens/t8/)
- ↑ back to [Computers and screens](https://md.mova.elamur.ai/free/en/corpora/questions/technology/36-computers-and-screens/)

