If A implies ′+′,B implies ′−′,C implies ′×′,D implies ′÷′, then calculate the value of the expression 10 times of 20% of (18C8A36D9B4).
Consider the following two statements: (A) Linear momentum of the system remains constant. (B) Centre of mass of the system remains at rest. (a) A implies B and B implies A. (b) A does not imply B and B does not imply A. (c) A implies B but B does not imply A. (d) B implies A but A does not imply B.