Question

12 6 81
17 5 121
6 8 ?

(1) 49
(2) 64
(3)70
(4)50​

Answer 1

sum of digits of first and second number=sum of digits of third number

1+2+6=9

8+1=9

similarly

1+7+5=4

1+2+1=4

therefore

sum of digits of 8 and 6 must be equal to that of the answer

8+6=14=1+4=5

therefore (4)50 is the correct answer

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