JEE Main 2013 Mathematics question
If the system of linear equations :
+ + = 6
+ + = 9
+ + = b
is consistent and has infinite number of solutions, then :
Answer: (4)
Solution
Infinitely many solutions need : $1(3a - 25) - 2(a - 10) + 3(5 - 6) = a - 8 = 0 ⇒
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