There are 2 whole numbers one less than 10 and another greater than 10when greater no is reduced by 4 and smaller no. is increased by 3 the product remains unaffected the difference between two numbers is?

Let the numbers be A and B. Such that A>10 and B>10 So, (A-4)*(B+3) = AB Or, 3A - 4B = 12 We know that A>10 and B<10. So, the only cases possible are A=12 and B=6 or A=16 and B=9 In that case, the difference between them is either 6 or 7.