Question

7. If ā + b + c = 0 and 1c] = 10 units. Then, (a+b).c
will be
(a) 80
(b) 200
(c) -100
(d) 40​

Answer 1

Answer:

c is correct answer

Explanation:

ā + b + c = 0

ā + b = -c

a+b=-10

now

(a+b).c=10×(-10)

=-100