Latest General Aptitude Question SOLUTION: 4+7+2 = 281435 7+3+9 = 212781 6+2+7 = 121456 2+8+5 = 164036 8+4+6 = ???????

I think the answer is 322478 or 322470.

Here's my logic:

First four digits have been explained by everyone so I'll just explain the last two: 78

How I got the number 7,
In the first equation

4+7+2=281435

5th digit is 3. That's 4-1

In the second equation

7+3+9=212781

5th digit is 8. That's 7+1

In the third equation

6+2+7=121456

5th digit is 5. That's 6-1

So there's a pattern of +1,-1,+1... for the 5th digit.

By this pattern, the 5th digit for the required equation comes to be 7.

Now the logic for last digit:

To get the last digit of first two equations, add the digits on L.H.S and add 2 and write down the units place digit.

4+7+2=281435
4+7+2= 13
13+2=15
Write down the unit place digit.

7+3+9=212781
7+3+9=19
19+2=21

To get the last digit of third and fourth equations, add the digits on L.H.S and add 1 and write down the units place digit.

6+2+7=121456
6+2+7=15
15+1=16

2+8+5=164036
2+8+5=15
15+1=16

For the last digit there's a pattern of +2,+2,+1,+1 so the next addition will be +0

8+4+6=322478
8+4+6=18
18+0=18

Or,

The next addition will be +2, if the pattern followed is +2,+2,+1,+1,+2,+2...

8+4+6=322470
8+4+6=18
18+2=20

Hence the answer 322478 or 322470.

322477 guess

322472
let x+y+z
multiply the x*y to get top two highest place
then do the same process y*z for middle two digit
for last two digit multiply two highest digit + highest digit *(lowest digit -1)