## 71 is my favourite number

For students upto class 5 (age upto 12)
samiul_samin
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Joined: Sat Dec 09, 2017 1:32 pm

### 71 is my favourite number

$a,b,c$ are $3$ differnt digits.Let,$\overline {abc}=100a +10b +c$
If $ba×c=abc$ and $abc$ is smallest such number then what is the value of $9c+8b+a$?
Note
Hint

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### Re: 71 is my favourite number

Onker manei to bujhlam na. Eta ki primary level er onko?
Math is the main inspiration of my life.

samiul_samin
Posts: 999
Joined: Sat Dec 09, 2017 1:32 pm

### Re: 71 is my favourite number

Tue Feb 20, 2018 10:41 am
Onker manei to bujhlam na. Eta ki primary level er onko?
Yes,$a=1$,$b=2$,$c=6$ So,the answer is $71$.Now think deeply and you will understand the question.

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### Re: 71 is my favourite number

samiul_samin wrote:
Tue Feb 20, 2018 11:03 am
Tue Feb 20, 2018 10:41 am
Onker manei to bujhlam na. Eta ki primary level er onko?
Yes,$a=1$,$b=2$,$c=6$ So,the answer is $71$.Now think deeply and you will understand the question.

Apner nombor guli a,b,c the bosaile to solve hoiboi. Kintu prosno theke kivabe jukti die proman Korte Hoy, ta bolen na.
Math is the main inspiration of my life.

samiul_samin
Posts: 999
Joined: Sat Dec 09, 2017 1:32 pm

### Re: 71 is my favourite number

Oh this just trial and error. In primary questions the answer is enogh and it is not a competetion question it was just an easy one for using trial and error method.

Posts: 120
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### Re: 71 is my favourite number

samiul_samin wrote:
Tue Feb 20, 2018 11:54 am
Oh this just trial and error. In primary questions the answer is enogh and it is not a competetion question it was just an easy one for using trial and error method.

Ta to bujhlam. Kintu somadhan ta den.
Math is the main inspiration of my life.

samiul_samin
Posts: 999
Joined: Sat Dec 09, 2017 1:32 pm

### Re: 71 is my favourite number

$21×6=126$ .I gave the solution before.

Posts: 120
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### Re: 71 is my favourite number

samiul_samin wrote:
Tue Feb 20, 2018 12:00 pm
$21×6=126$ .I gave the solution before.
Sorry to say, please don't mind.

126 kiser solution?
Math is the main inspiration of my life.

samiul_samin
Posts: 999
Joined: Sat Dec 09, 2017 1:32 pm

### Re: 71 is my favourite number

Tue Feb 20, 2018 12:27 pm
samiul_samin wrote:
Tue Feb 20, 2018 12:00 pm
$21×6=126$ .I gave the solution before.
Sorry to say, please don't mind.

126 kiser solution?
The number $abc=126$ So,$a=1,b=2,c=6$.I think you understand it now.

Posts: 120
Joined: Sun Jan 28, 2018 11:43 pm
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### Re: 71 is my favourite number

samiul_samin wrote:
Tue Feb 20, 2018 1:44 pm
$21×6=126$ .I gave the solution before.
The number $abc=126$ So,$a=1,b=2,c=6$.I think you understand it now.