If 397 is coded as 210191, 459 is coded as 360881 and 123 is coded as 030260 Then what is th

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26 Jul 2017 Coding-Decoding

If
397 is coded as 210191,
459 is coded as 360881 and
123 is coded as 030260

Then what is the code for 789?

OPtion

1) 631822
2) 630742
3) 631824
4) 630824
5) 630942
6) 660842
7) 638842
8) 630822
9) 631042
10) None of these

Solution

Lets denote original number as abc
The coded number could be broken into 3 part of 2 digits each
First two digits of coded number from left is derived as = a*c =7*9 = 63
Middle two digits are derived as = a+c-b = 7+9-8 = 08
Last two digits are derived as = Reverse of (a+b+c) = Reverse of(7+8+9) = Reverse of (24) = 42

Hence 630842
Option 10)

Correct Option: 10 Best Solution (29)

abhishek   7 years AGO

multiple hundred and one's places ex. 789 = 63
Then add hundred and one's place ex. 789 =16 then subtract from ten's place ex. 789 = 16 - 08
Then add all the digits and reverse them ex. 789 = 7+8+9 =24
So number formed is 630842
option 10)

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Varun   7 years AGO

630827 is the answer,
Every 2 digits of the numbers are codes as follows :
7*9 7-8+9 (reverse of 9*8)
63 08 27

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Nabendu   7 years AGO

(7*9)=63
REVERSE(7+8+9)=42
(7+9-8)=8
So,Ans. is =630842

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Vidya   7 years AGO

ans is 630842.
63=7*9
08=(7+9)-8=16-8=08
42=inverse of the digits in 24(=7+8+9)

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Devendra Marghade   7 years AGO

Coding for given number xyz=(xz)(x+z-y)(Reverse of x+y+z)
So for 789=(7*9)(7+9-8)(Reverse of 7+9+8)=(63)(08)(42) =630842
Option 10)

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SAYAN CHATTERJEE   7 years AGO

1st 2 digits are the product of the 1st and last digit
of the no. given

2nd and 3rd digits are the difference between the summation of the 1st and last digits and the 2nd digits.

so, the answer = ((7*9)(7+9-8)reverse of (7+8+9))
= 630842.
Option 10.
5th & 6th digits are the product of reverse of the summation of the digits of the no. given

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Mukund Manohar   7 years AGO

3 digit Number = (first digit * last digit) (first digit+last digit - second digit) (reverse of sum of all the digits)
397 = (3*7) (3+7 - 9) (reverse of 3+9+7) = (21) (01) (91) = 210191
459 = (4*9) (4+9 - 5) (reverse of 4+5+9) = (36) (08) (81) = 360881
123 = (1*3) (1+3 - 2) (reverse of 1+2+3) = (03) (02) (60) = 030260
789 = (7*9) (7+9 - 8) (reverse of 7+8+9) = (63) (08) (42) = 630842

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NADIMPALLI SATISH BABU   7 years AGO

397=(3*7=21) (3+7-9=01) (reverse of 3+9+7=91)
simaly all are coming
789=(7*9=63) (7+9-8=08) (reverse of 7+8+9=42)

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garvita rakholiya   7 years AGO

the first 2 digits will be multiplication of 7and 9 i.e. 63 for middle 2 no. add 7 and 9 then subtract by 8 i.e. 08 for last 2 digits add all 3 and reverse that no. i.e. 7+8+9 i.e. 24 reverse it we get 42 our ans. is 630842

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kanimozhi kalimuthu   7 years AGO

397=(((7*3)*10^4)+(((7+3)-9)*10^2)+(rev of (3+7+9))
Therfore 789 is coded as 630842

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vibha   7 years AGO

9*7=63
9+7=16-8=08
7+8+9=24->42(REVERSE DIGITS)

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Azim Uddin Siddiqui   7 years AGO

Let the no b ABC.
The first two digits of the code are given by multiplying the digits at extreme positions, i.e. A*C
397= 3*7=21
459=4*9=36
123= 1*3=03
For 789 it will b 7*9=63 ................(1);
Next two digits are given by (A-B)+C, i.e.
(3-9)+7=01
(4-5)+9=08
(1-2)+3=02
For 789, it will b (7-8)+9=08 ..............(2);
The last two digits are given by Reverse(A+B+C), i.e.
Reverse(3+9+7)= Reverse(19)= 91
Reverse(4+5+9)= Reverse(18)=81
Reverse(1+2+3)= Reverse(06)=60
For 789 Reverse(7+8+9)= Reverse(24)=42........(3)
combining (1) , (2) & (3) ,
v get the code for 789 as 630842. So option 10.

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Jaimin Raval   7 years AGO

first 7*9 63: then put 0. then addition of 789 writing in reverse order and then addition of first and third term and subtraction from middle term

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G.S.Kantharao   7 years AGO

397=(3*7) (3+7-9)[Reverse of (3+9+7)]=210191
459=(4*9)(4+9-5)[Reverse of (4+5+9)]=360881
123=(1*3)(1+3-2)[Revese of (1+2+3)]= 030260
For 789=(7*9)(7+9-8)[Reverse of (7+8+9)]=630842
Hence the Right option is 👈

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Rama lakshmi   7 years AGO

For 789 coded as 630842
for 397 coded as 210191
3*7=21 & 3+7-9=01 & 3+9+7=19(reverse of 19 is 91)
So the code for 397 is 210191
Like wise for 459 is 360881
for 123 030260
And for 789
7*9=63 & 7+9-8=08 & 7+9+8=24(reverse of 24 is 42)
So for 789 code is 630842
Final option is None of These

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kulbir singh   7 years AGO

As the method says397=210191which comes as3*7=21,
3-9+7=01
At last 3+9+7=19 then rearrange 19 into 91 so we have210191 similarly 789
7*9=63
7-8+9=08
7+8+9=24 by rearranging it comes 42 so we have 630842 which is not in the options so 10 is right none off these

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prashant   7 years AGO

630842
First two digits - multiplication of 1st and 3rd given digits
second two digits - add first and third then subtract 2nd one
third two digits - add all 3 given digits and reverse

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Deepthi Sarvani   7 years AGO

798
7*9=63
7+3-9=01
7+8+9=24=42
630842

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DEVANSH GOHADKAR   7 years AGO

789= (7*9)(7+9-8)(7+9+8)
6308(24)
24 opposite is 42 then
789=630842
Ans 10 none of these

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Govind   7 years AGO

789... (7*9) (7+9-8) (7+8+9) ... (63( (08) (24)... 630842.. none of these option .. option 10

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Dolly   7 years AGO

abc = (a*c) (a-b+c) ( rev (a+b+c))
789 ... (63)(08) ( rev 24) .. 630842

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payal rajendra sahu   7 years AGO

(2)39 (10)....
(3)45(6).....
(0)12 (3)....
(6)78 (9)......

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VARUN   7 years AGO

7X9=63
7+9-8=8,WRITTEN AS 08
7+8+9=24,WRITTEN AS 42
SO answer is 630842

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umend   7 years AGO

for 1st 2 digit=7*9=63
next 2 digit=9+7-8=08
last 2 digit=7+8+9=24: reverse it=42
ans=630842

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sneha   7 years AGO

789=7*9 9+7-8 7+8+9(reverse)
63 08 42(reverse of 24) answer is=630842

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NABA KISHORE PADHY   7 years AGO

the pattern is 7*9=63
9+7-8=08
7+8+9=24 reverse it 42
So required answer is 630842

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AYAN PAUL   7 years AGO

397 = 3*7 = 21 , 3+9+7 = 19 which is written as 91 by reversing it and the middle two terms come from (7+3)-9 = 01 now combining these three digits we get 397 = 210191
Now if we follow same operation in the number 789 then we can get (7*9)=63 , 7+8+9 = 24 which will be written as 42 and (7+9)-8 = 08 so combining these three digits the ans will be 630842 which is none of these among the options.

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ManikumarSoruvu   7 years AGO

Ans:630842

397=(3*7) (3+7-9) Reverse0f (7+3+9) =210191
459=(9*4) (9+4-5) ReverseOf(4+5+9)=360881
123=(1*3) (3+1-2) ReverseOf(1+2+3)=030260
similarly,
789=(7*9) (9+7-8) ReverseOf(7+8+9)=630842

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Maxx   7 years AGO

789 will be code as follows
First two digit=multiplication of 1st and 3rd digit=7*9=63
Middle two digits=sum of 1st and 3rd-2nd digit=7+9-8=08
Last two digits=reverse of the sum of all digits=24
So the code will be 630842.
Since no such option answer will be 10

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