Math Is Fun Forum
You are not logged in.
- Topics: Active | Unanswered
#1 2020-04-08 19:40:56
- MikeKnopfler
- Banned
- Registered: 2020-04-08
- Posts: 1
Need help
[advert removed by admin]
Can you make 6 ?
eg. 2 + 2 + 2 = 6
3 x 3 - 3 = 6
Rules: Any method of calculation is allowed. One digit should be repeated three times.
The examples show how to do this with 2s and also with 3s.
Can you do this with every digit from 0 to 9 ?
Bob
Last edited by Bob (2020-12-30 21:01:21)
Offline
#2 2020-04-08 21:07:27
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,845
Re: Need help
Hi,
2+2+2=6
3*3-3=6
√(4*4) +√4 = 6
6+6-6=6
sqrt(9)*sqrt(9)-sqrt(9)=6
7 - 7/7 = 6
And some half-solved:
(5 squared + 5)/5 = 6
cube root (8 * 8) + cube root 8 = 6.
LHS = 2, 3, 4, 5, 6, 7, 8, and 9 have been given.
Out of some half solved, better solution is
is also correct.
Further,
cube root (8 * 8) + cube root 8 = 6 is a possible solution.
For the first part,
0 0 0 = 6,
is perfectly acceptable.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
Offline
#3 2020-04-08 21:37:27
- Bob
- Administrator
- Registered: 2010-06-20
- Posts: 10,640
Re: Need help
hi MikeKnopfler
Welcome to the forum.
Looks to me like you just need 0 and 1.
Here's a hint:
3! = 6 and then extending that using 0! being defined as 1.
Bob
Children are not defined by school ...........The Fonz
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you! …………….Bob 
Offline
#4 2020-04-08 23:05:36
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,845
Re: Need help
Hi MikeKnopfler,
For
0 0 0 = 6,
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
Offline
#6 2020-12-30 20:38:45
- Bob
- Administrator
- Registered: 2010-06-20
- Posts: 10,640
Re: Need help
hi karryman,
Welcome to the forum.
You're right. This poster asked a genuine maths question to which we provided some answers.
Later he edited the post to make it an advert. I will edit this back for you. 
Bob
Children are not defined by school ...........The Fonz
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you! …………….Bob
Offline