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PG TRB Mathematics Model Question Papers with Answers Pdf

TRB Model Questions
1. A function is said to be Harmonic function it is satisfies
 
  • A. Laplace equation
  • B. CR equations
  • C. Both the equation
  • D. None of these
Answer: A.
Laplace equation
 
2. The variance of a binomial distribution is
 
  • A. np
  • B. npq
  • C. 0
  • D. √npq
Answer: B.
npq
 
 
3. The length of latus rectum of the parabola is
 
  • A. a
  • B. 2a
  • C. 4a
  • D. a/2
Answer: C.
4a
 
4. The path pursued by a projectile is called
 
  • A. Range
  • B. Trajectory
  • C. Both
  • D. None of these
Answer: B.
Trajectory