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PG TRB Maths Online Test

TRB Model Questions
 
5. A relation is an equivalent relation if it is
 
  • A. Both reflexive and symmetric
  • B. Reflexive, symmetric and transitive
  • C. Both reflexive and transitive
  • D. Both symmetric and transitive
Answer: B.
Reflexive, symmetric and transitive
 
6. Bolzano Weierstrass theorem states that
 
  • A. Every bounded infinite subset of R has a limit point
  • B. Every bounded subset of R has a limit point
  • C. Every infinite subset of R has a limit point
  • D. Every subset of R has a limit point
Answer: A.
Every bounded infinite subset of R has a limit point
 
 
7. The standard normal distribution is represented by
 
  • A. N(0, 0)
  • B. N(0, 1)
  • C. N(1, 1)
  • D. N(1, 0)
Answer: B.
N(0, 1)
 
8. If three forces keep a particle in equilibrium, then they must be
 
  • A. perpendicular
  • B. equal
  • C. coplanar
  • D. parallel
Answer: C.
coplanar