Insert the missing number :

  1. 47
    (a) 12
    (b) 9
    (c) 18
    (d) 15
  2. 48
    (a) 7
    (b) 9
    (c) 3
    (d) 5
  3. 49
    (a) 459
    (b) 945
    (c) 549
    (d) 594
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  • 1 Answer(s)
      1. (c) 9

         

        Solution:-
        10 – 7 = 11 – 8 = 12 – 9 = 3 & square of 3 = 9. 

        Same as, 
        15 – 12 = 16 – 13 = 17 – 14 = 3 & square of 3 = 9. 

        Then, the value of ? is 9. 

        Hence, the correct answer is option (c) 9. 

      2. (d) 5 

         

        Solution:-
        Square root of 81 = 9, 
        Square root of 49 = 7, 

        Same as,
        Square root of  25 = 5. 

        Then, the value of ? is 5. 

        Hence, the correct answer is option (d) 5. 

      3. (b) 945 

     

    Anurag Mishra Professor Answered on 1st May 2016.
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