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4th Class Mathematics Miscellaneous / विविध Question Bank Miscellaneous

  • question_answer
    Bageera wrote few number patterns in his maths book. His maths teacher found some patterns incorrect. Can you figure out which pattern is incorrect in the following questions: A. 99, 96, 93, 90,...... B. 101, 110, 011, 101, 011, 110,...... C. 80, 60, 40, 20,...... D. 100, 150, 200, 250, 300, ......

    A) C                    

    B) D

    C) A                     

    D) B

    Correct Answer: D

    Solution :

        99, 96, 93, 90, ...... Here, the rule is subtract 3. 99 - 3 = 96 - 3 = 93, 93 - 3, 90 Thus, the pattern is correct. B. 101, 110, 011, 101, 011, 110, .... Here, the rule is to change the position of 0. 1st in centre, then at right, then at left. Likewise, the next three numbers should be 101, 110, 011 but we have 101, 011, 110. Thus, the pattern is incorrect. C. 80, 60, 40, 20, ...... Here the rule is subtract 20. 80 - 20 = 60 - 20 = 40 - 20 = 20 Thus, the pattern is correct. D. 100, 150, 200, 250, 300, ...... Here, the rule is add 50. 100 + 50 = 150 + 50 = 200 + 50 = 250 + 50 = 300. Thus, the pattern is correct. Therefore, the answer is option (d) B.


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