If sum and difference of two numbers is 7 and 1 respectively. Then the two numbers are
1, 6
2, 5
3, 2
7, 0
None of these
Le the two numbers be a and b ( a>b)
a+b = 7
a-b = 1
a = 4
b = 3
If the sum and difference of two numbers are 20 and 8 respectively, then the difference of their squares is: