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TRB MODEL QUESTIONS FOR MATHS

TRB Model Questions
16. Which one of the following is prime number?
 
  • A. 22
  • B. 81
  • C. 72
  • D. 73
 
17. The number of divisor of 360 is
 
  • A. 24
  • B. 25
  • C. 26
  • D. 28
 
 
18. If A and B are skew symmetric matrices then A + B is
 
  • A. unit matrix
  • B. diagonal matrix
  • C. skew symmetric
  • D. symmetric
 
19. The set of all rational number is
 
  • A. countable
  • B. monotonic
  • C. uncountable
  • D. none of these
 
20. Arbitary intersection of closed sets is
 
  • A. monotonic
  • B. open
  • C. closed
  • D. none of these