Question

2. If a, b and c are integers such that

( 4 2 2)( 4 2 ) 20,

3 3 3 3 + − a + b + c =

then which one of the following is

true ?

(1) a + b – c = 10

(2) a – b + c = 10

(3) a + b = 2c

(4) a + b + c = 16 ​

Answer 1

which std question is this