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Problème de N en somme minimale avec 1, 2, 3, 4 … Obtenir un nombre N en utilisant le minimum de chiffres
dans l'ordre et les opérations usuelles. Un défi consiste à traduire l'année
en cours avec ces contraintes. Exemple en utilisant 6! = 720 et 3!4 = 1
296, faisant un total de 2016.
|
Voir Factorielles
/ Table – Boite à outils des
factorielles
Nombre de 1 à …
L'astérisque
indique que le chiffre est déjà utilisé.
|
N |
1 |
2 |
3 |
4 |
|
1 |
1 |
|
|
|
|
2 |
1 |
× 2 |
|
|
|
3 |
1 |
+ 2 |
|
|
|
4 |
–1 |
+ 2 |
+ 3 |
|
|
5 |
1 |
× (2 |
+ 3) |
|
|
6 |
1 |
+ (2 |
+ 3) |
|
|
7 |
–1 |
+ 2 |
+ 3! |
|
|
8 |
1 |
× (2 |
+ 3!) |
|
|
9 |
1 |
+ 23 |
* |
|
|
9 |
(1 |
+ 2) |
× 3 |
|
|
9 |
12 |
* |
– 3 |
|
|
10 |
1 |
+ 2 |
+ 3 |
+ 4 |
|
11 |
1 |
+ 2 |
× 3 |
+ 4 |
|
12 |
12 |
* |
|
|
|
13 |
12 |
* |
– 3 |
+ 4 |
|
14 |
1 |
× (2 |
+ 3 |
× 4) |
|
15 |
12 |
|
+ 3 |
|
|
16 |
1 |
× (2 |
+3! ) |
|
|
17 |
1 |
+ (2 |
+3! ) |
|
|
18 |
12 |
* |
+ 3! |
|
|
19 |
–1 |
+ (2 |
+ 3) |
× 4 |
|
20 |
1 |
× (2 |
+ 3) |
× 4 |
|
20 |
1 |
× 2 |
– 3! |
+ 4! |
|
21 |
1 |
× 23 |
* |
|
|
22 |
–1 |
+ 23 |
* |
|
|
23 |
1 |
× 23 |
* |
|
|
24 |
1 |
+ 23 |
* |
|
|
24 |
(12 |
* |
÷ 3) ! |
|
N |
1 |
2 |
3 |
4 |
5 |
|
25 |
(1 |
+ 2)3 |
* |
|
|
|
26 |
–1 |
+ 23 |
* |
+ 4 |
|
|
27 |
1 |
× 23 |
* |
+ 4 |
|
|
28 |
1 |
+ 23 |
* |
+ 4 |
|
|
29 |
(1 |
+ 2)3 |
* |
|
|
|
30 |
(12 |
* |
+ 3) |
|
|
|
30 |
(1 |
+ 2) ! |
+ 3! |
× 4 |
|
|
30 |
(1 |
+ 2 |
+ 3) ! |
÷ 4! |
|
|
31 |
(1 |
+ 2)3 |
* |
+ 4 |
|
|
31 |
1 |
+ (2 |
× 3) ! |
÷ 4! |
|
|
32 |
12 |
* |
× 3 |
– 4 |
|
|
33 |
1 |
+ 2 |
+ (3!) ! |
÷ 4! |
|
|
34 |
12 |
* |
× 3 |
|
|
|
35 |
(–1 |
+ 2 |
+ 3 |
|
× 5 |
|
36 |
12 |
* |
× 3 |
|
|
|
37 |
1 |
× 2 |
+ (3 |
+ 4) |
× 5 |
|
38 |
1 |
+ 2 |
+ (3 |
+ 4) |
× 5 |
|
38 |
12 |
* |
× 3 |
|
|
|
39 |
(–1 |
+ 2 |
+ 3 |
+ 4) |
× 5 |
|
40 |
12 |
* |
× 3 |
+ 4 |
|
|
41 |
1 |
– 2 |
– 3 |
+ 45 |
* |
|
42 |
(1 |
– 2) |
× 3 |
+ 45 |
* |
|
43 |
–1 |
+ 2 |
– 3 |
+ 45 |
* |
|
44 |
–1 |
× (2 |
+ 3 |
+ 4) |
× 5 |
|
45 |
1 |
× (2 |
+ 3 |
+ 4) |
× 5 |
|
46 |
1 |
× (– 2 |
+ 3) |
+ 45 |
* |
|
47 |
1 |
– 2 |
+ 3 |
+ 45 |
* |
|
48 |
(12 |
* |
÷ 3) ! |
+ 4! |
|
|
49 |
–1 |
+ 2 |
+ 3 |
+ 45 |
* |
|
50 |
1 |
× ( 2 |
+ 3) |
+ 45 |
* |
|
51 |
1 |
+ 2 |
+ 3 |
+ 45 |
* |
|
N |
1 |
2 |
3 |
4 |
5 |
6 |
|
|
|
|
|
|||
|
2008 |
–1 |
+ (– 2 |
+ 3!4 |
/ |
– 5 |
+ 6! ) |
|
2009 |
1 |
× (– 2 |
+ 3!4 |
/ |
– 5 |
+ 6! ) |
|
2010 |
1 |
+ (– 2 |
+ 3!4 |
/ |
– 5 |
+ 6! ) |
|
2012 |
–1 |
+ 2 |
+ 3!4 |
/ |
– 5 |
+ 6! |
|
2013 |
1 |
× (2 |
+ 3!4 |
/ |
– 5 |
+ 6! ) |
|
2014 |
1 |
+ 2 |
+ 3!4 |
/ |
– 5 |
+ 6! |
|
2015 |
1 |
– 2 |
+ 3!4 |
/ |
+ 5! |
× 6 |
|
|
3!4 |
|
+ 6! |
|||
|
2016 |
|
3!4 |
+ 5! |
× 6 |
||
|
2016 |
((1 |
+ 2)!
)! |
+ 3!4 |
|
|
|
|
2017 |
–1 |
+ 2 |
+ 3!4 |
/ |
+ 5! |
× 6 |
|
2018 |
–1 |
– 2 |
+ 3!4 |
/ |
+ 5 |
+ 6! |
|
2018 |
1 |
× 2 |
+ 3!4 |
/ |
+ 5! |
× 6 |
|
2019 |
1 |
+ 2 |
+ 3!4 |
/ |
+ 5! |
× 6 |
|
2020 |
1 |
– 2 |
+ 3!4 |
/ |
+ 5 |
+ 6! |
|
2021 |
((1 |
+ 2)!
)! |
+ 3!4 |
/ |
+ 5 |
|
|
2022 |
–1 |
+ 2 |
+ 3!4 |
/ |
+ 5 |
+ 6! |
|
2023 |
1 |
× 2 |
+ 3!4 |
/ |
+ 5 |
+ 6! |
|
2024 |
|
|
|
|
||
|
2025 |
|
|
|
|
||
|
2026 |
|
|
|
|
||
|
2027 |
((1 |
+ 2)! )! |
+ 3!4 |
/ |
+ 5 |
+ 6 |
|
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|
Voir Brève de
Math 493
Florilège
|
N |
1 |
2 |
3 |
4 |
5 |
6 |
|
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|
96 |
(12 |
* |
÷ 3) ! |
× 4 |
|
|
|
123 |
123 |
|
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|
130 |
1 |
+ 2 |
+ 3 |
+ 4 |
+ 5! |
|
|
1728 |
123 |
* |
* |
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Retour |
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Suite |
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Voir |
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