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Q.18 see image …...................................................................

Q.18 see image …...................................................................

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Grade:12

2 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
4 years ago
Dear student

Put x = y = z= 3

And eliminate options a and b as det should be zero

Put x = 3, y= 4, z= 5

Det = 10

Right answer option c

Regards
Arun
25750 Points
4 years ago
Dear student
 
lets find out
 
xC1 = x
xC2 = x(x-1)/2
xC3 = x (x-1)(x-2)/3
 
Now you can simplify
 
by tqking x , y and z common from every row as common

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