Answers

2015-01-20T12:40:47+05:30
So putting a = 0 we get only 1 value 

now putting b = 0 we get only 1 value 

putting c = 0  a and b can take up values in 3 ways

now putting d = 0 we see we get ³P₂ values out of which we got 3 values already 

so total values ³P₂ - 3 + 2 + 3 = 3! + 2 = 3.2  + 2 = 8 ways
0