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PG TRB Maths Online Test

TRB Model Questions
1. The focus of the parabola y2+4ax = 0 is
 
  • A. (-a, 0)
  • B. (0, a)
  • C. (a, 0)
  • D. (0, -a)
Answer: A.
(-a, 0)
 
2. Through any point in the plane of ellipse, number of normal’s can be drawn is
 
  • A. 2
  • B. 3
  • C. 4
  • D. 5
Answer: C.
4
 
 
3. Every square matrix can be uniquely expresses as the sum of
 
  • A. unit matrix
  • B. a symmetric and skew symmetric matrix
  • C. two symmetric matrix
  • D. two skew symmetric matrix
Answer: B.
a symmetric and skew symmetric matrix
 
4. Every group is a
 
  • A. field
  • B. ring
  • C. semi group
  • D. abelian
Answer: C.
semi group