Latest cat Aptitude Question SOLUTION: Q. If in coded language 7+8=94 5+4=51 4+9=23 8+4=42 Then 6+7=?

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Q. If in coded language
7+8=94
5+4=51
4+9=23
8+4=42
Then
6+7=?

Asked In cat husein shaikh (10 years ago)

Solved Dr.Dipin Singh Read Solution (8)

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Read Solution (8) :

Dr.Dipin Singh  (10 years ago)

6+7=63

7+8=94......7*8-7=49 .. reverse the digits to get 94
5+4=51...5*4-5=15... reverse digits to get 51.
4+9=23
8+4=42
Then
6+7= 63... 6*7-6=36.. reverse digits to get 63.

Is this solution Helpfull? Yes (30) | No   

Ratnesh Pandey  (10 years ago)

the ans is 63
step1:multiply the given 2 numbers.
step2:then subtract the first one from the result.
step3:revert the result.

Is this solution Helpfull? Yes (4) | No   

Mantripragada Nikhil  (10 years ago)

63...observe that 7*(8-1)=7*7=49...reverse of 49 is 94
5*(4-1)=5*3=15...reverse of 15 is 51
4*(9-1)=4*8=32...reverse of 32 is 23
8*(4-1)=8*3=24...reverse of 24 is 42
so ......6+7=.....6*(7-1)=6*6=36...reverse of 36 is 63

Is this solution Helpfull? Yes (3) | No (1)  

kwatra  (10 years ago)

do you know its answer???

Is this solution Helpfull? Yes (2) | No (3)  

viswambher  (9 years ago)

according to the given information
the first number is multiplied with the number we get after reducing the second number by one and then reversing the answer we get.


7*(8-1)=49
and 94 is reverse of 49

similarly
5*(4-1)=15
and 51 is reverse of 15

similarly 4*8=32
23 is reverse of 32

8*3=24
42 is reverse of 24

similarly 6*(7-1)=36
reverse of 36 is 63

therefore answer is 63

Is this solution Helpfull? Yes (2) | No   

Prabhat Yadav  (10 years ago)

>>(7*8)-7=49
now reverse 49 ie 94
similary
>>(6*7)-6=36
now reverse 36 ie
63

Is this solution Helpfull? Yes (1) | No (1)  

sravani  (9 years ago)

7*8 -7=49 reverse 94
5*4 - 5=15 reverse 51
4*9 - 4=32 reverse 23
8*4 -8=24 reverse 42
6*7 -6=36 reverse 63
so, 63 is the answer...

Is this solution Helpfull? Yes | No (1)  

Priyanka  (6 years ago)

5+5=10
10+6=16
16+7=23
23+8=31
31+9=40

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