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

1. $534$
2. $1403$
3. $1623$
4. $1513$
edited | 2.5k views

(137)+ (276)= (435)

So basically the number are given in Octal base.

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

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(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
+5
This is octal no system, your reasoning is incorrect !

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

+1
How do we identify this is octal in first place ?
+4
Because all the given 3 digit numbers are less than 8
base is 8 here so simple ,(435) base 8 is answer