Yes you right..I did wrong answer..no maths is single method to solve a solution..there is many method here to solve one problem...I used one method...I didn't solve a method what you said to me....I don't know reverde process at all..I see difference is 2 for all numbers so I didNow i know why 3=28
Because from top every ans is one step down. At 6 you multiply 6X5 and write 5=30
But at reversal point, at 5 you multiply 5X6 and write 4=30
So 3=28 is the correct ans.