1.

I : If a = I +j - k, b = 2i - 3j + 2k, c = 13 I - 7j + 3k then [a b c] = 0 II : If a,b,c are mutually perpendicular unit vector then [a b c]^(2) = 1

Answer»

only I is ture
Only II is ture
both I and II are true
Neither I nor II are true

Answer :C


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