CAT Preparation – Linear Equations Questions 05

Question: a1x + b1y + c1z = d1 a2x + b2y + c2z = d2 a3x + b3y + c3z = d3 Which of the following statements, if true, would imply that the above system of equations does not have a unique solution? (i) a1/a2 = b1/b2 = c1/c2...

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CAT Preparation – Linear Equations Questions 02

Question: 2x + 5y = 103. Find the number of positive integers, x, y, that satisfy this equation. (a) 9 (b) 10 (c) 12 (d) 20 DETAILED SOLUTION This says that when you subtract a multiple of 5 from 103, you get an even number. You have to subtract...

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