Two nonzero vectors have unequal magnitudes of X and Y. Which of the following could be the length of their sum?
(i) 0
(ii) X+Y
(iii) X
(iv) Y
1.(ii) only
2.Any of them could be the length of the sum.
3.(i), (iii), and (iv)
4.(ii), (iii), and (iv)
4
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