Question

Three lines through origin having direction ratios
(1,a, a?), (1,6, 62) and (1,c, c?) are non- coplanar. But
the lines with direction ratios (a, a?, 1+ a'),
(6,62,1+63) and (c,c',1+c%) are coplanar. Then the
value of abc is?​

Answer 1

Answer:

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