9000101801

Level: 
Project ID: 
9000101801
Accepted: 
1
Clonable: 
0
Easy: 
1
Among vectors a=(1;2;0), b=(2;1;2), c=(1;3;0) and d=(3;0;0) find a pair of vectors with equal length.
b, d
a, c
a, d
b, c