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Section contains 2 questions. The answer...

Section contains 2 questions. The answer to each of the questions is a single digit integer, ranging from 0 to 9. For see, if the correct answers to question numbers X,Y,Z (say) are 6,0 and 9 respectively, then the correct darkening tables will look like the following :
Let `veca,vecbvecc` are three vectors of which every pair is non collinear , and the vectors `veca+3vecb` and `2vecb+vecc` are collinear with `vecc` are `veca` respectively. If `vecb.vecb=1`, then find `|2veca+3vecc|`.

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The correct Answer is:
6
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Section contains 2 questions. The answer to each of the questions is a single digit integer, ranging from 0 to 9. For see, if the correct answers to question numbers X,Y,Z (say) are 6,0 and 9 respectively, then the correct darkening tables will look like the following : If vecx_(1),vecx_(2),vecx_(3) are two sets of non-coplanar vectors such that vecx_(r ).vecy_(s)={{:(0","" if "rnes),(2""" if "=s):} where r,s =1,2,3 what is the value of [vecx_(1)vecx_(2)vecx_(3)][vecy_(1)vecy_(2)vecy_(3)] ?