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+9 votes
2.9k views

If $137 + 276 = 435$ how much is $731+672?$

  1. $534$
  2. $1403$
  3. $1623$
  4. $1513$
asked in Numerical Ability by Veteran (115k points)
edited by | 2.9k views

4 Answers

+21 votes
Best answer

Answer. C.

(137)+ (276)= (435) 

So basically the number are given in Octal base.

Similarly, addition of 731,672 gives 1623 in octal. 

answered by Active (3.5k points)
selected by
0
assume base is x then convert numbers in given equation to decimal then find the value of x

x^2+3x+7 + 2x^2+7x+6 = 4x^2+3x+5

x=8,-1

base cannot be -1 so x=8
+7 votes
(A)534

Exp:-137+276=435,        731+672=534

on reversing the 137 we get 731 and 276 we get 672 hence reverse of 435 is 534
answered by (357 points)
+7
This is octal no system, your reasoning is incorrect !
+6 votes

This is Octal number and this is how we have to solve it 

answered by (227 points)
+1
How do we identify this is octal in first place ?
+5
Because all the given 3 digit numbers are less than 8
0 votes
base is 8 here so simple ,(435) base 8 is answer
answered by Active (4.3k points)
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