two vectors of magnitudes 7 units and 15 units can never give resultant of?

a)7 units
b)11 units
c)13 units
d)20 unit

2 answers

The resultant of two vectors A and B can have a magnitude ranging between ||A||±||B||.

The minimum is when they are lined up and opposite to each other, and the minimum is when they are lined up and in the same direction.

Now you can make your choice of answers.
The minimum is when they are lined up and opposite to each other, and the maximum is when they are lined up and in the same direction.