Saw this question few minutes ago and I'm embarassed at my inability to figure it out

QUESTION

Use three 9s and a minus sign to represent the number 1

Cc Richiez
Joe82834
Mathemagician1
Datechman
Umartins1
Agentofchange1
Other Gurus

Make i book first.

Jesuspikin77:

[(9+9) - (9+]

The last digit there is "8" , i don't know why it's not displaying after posting

[(9+9)-(9+]

Dejideji1:
The last digit there is "8" , i don't know why it's not displaying after posting

[(9+9)-(9+8 )]

Egbon I commend your effort but the question said you are to use: 9, 9, 9, - ONLY
But you used 9, 9, 9, 8, -, +
So... I'm afraid it didn't click

One more thing: I got this question from the puzzle corner of JSS 1 Mathematics text

Yeah I know it's creepy

ThankyouJesus i need your input dont just view and go

Jesuspikin77:
Egbon I commend your effort but the question said you are to use: 9, 9, 9, - ONLY
But you used 9, 9, 9, 8, -, +, () and []
So... I'm afraid it didn't click

Funny, mathematically there is no way only three 9s and a minus sign can combine to produce "1" without the use of another variable, and operator.

Initially I thought of 1000-999. But that still involves another number and the "9s" are not separate. But let's wait and see if anyone will be able to Crack it.

Dejideji1:


Funny, mathematically there is no way only three 9s and a minus sign can combine to produce "1" without the use of another variable, and operator.

Initially I thought of 1000-999. But that still involves another number and the "9s" are not separate. But let's wait and see if anyone will be able to Crack it.

You're right, that's why I modified my post earlier which therefore means the only flaw in your earlier solution is the operator, + and the integer, 8.
Anywho, we remain fingers-crossed while we wait for who can crack this JSS 1 puzzle.

I don't think we can use three nines and a minus to represent a one, if we were to use division my answer would have been (9/9)₉.

Maybe you should review the question or could it be that the textbook made a mistake.

Jesuspikin77:
Saw this question few minutes ago and I'm embarassed at my inability to figure it out

QUESTION

Use three 9s and a minus sign to represent the number 1

Cc Richiez
Joe82834
Mathemagician1
Datechman
Umartins1
Agentofchange1
Other Gurus

9^9-9

DatechMan:


9^9-9

BABA O!

I AM SINGING SALUTATIONS OOO

HA!! SOMBORI HOLD ME; Dejideji And Mathemagician1 come and see ooo

IN FACT ALL THE MODS SHOULD PLEASE MAKE SURE THIS GETS TO FRONTPAGE

CC Fynestboi
Obinoscopy
Mynd44
Seun
Lalasticlala

Jesuspikin77:


BABA O!

I AM SINGING SALUTATIONS OOO

HA!! SOMBORI HOLD ME; Dejideji And Mathemagician1 come and see ooo

IN FACT ALL THE MODS SHOULD PLEASE MAKE SURE THIS GETS TO FRONTPAGE

CC Fynestboi
Obinoscopy
Mynd44
Seun
Lalasticlala

He still made use of another operator apart from (-) he also used the power operator. (^). It's the same as 9^(9-9) simply because the operator is not shown during written calculations doesn't make it absent.

If you are writing computer programs or performing calculations electronically then you will know that you can't ignore the sign.
What he used is a superscript notation, which in written calculations means power.

Jesuspikin77:

*modified, pls refresh

Just seeing this.bn busy lately.good one by datecMan