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MHT CET202019 Oct 2020Evening ShiftMathematicsFunctionsActual

If R = (a, ~b ) / b =a-1, a Z , 5 < a < 9 , then the range of R is

Options

  1. A7,8,9
  2. B5,6,7
  3. C6,7,8
  4. D5,6,7,8,9

Correct answer

B. 5,6,7

Step-by-step solution

(A) Given R = ( a , b ), b = a -1, a z , 5 < a < 9 a=6,7,8a=6, b=6-1=5a=7, b=7-1=6a=8, b=8-1=7R= (6,5),(7,6),(8,7) Range of R= 5,6,7

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