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Siva defines a number as 'connected with 9' if it is divisible by 9, or if the sum of its digits is 9, or if 9 is one of the digits of the number, and other numbers are all 'not connected with 9'. As per his definition, the number of integers from 1 to 90 (both included) which are not connected with 9 is :
Correct Answer: (c)
Official keyThis question appeared in the APPSC Prelims 2024 examination (GS (Group-II)). It is Question 141 out of 386 questions in this paper. Section: Mental Ability.
This question was part of the APPSC Prelims 2024 (GS (Group-II)). The APPSC Prelims examination tests candidates on general studies, current affairs, and aptitude through multiple-choice questions.
Practice previous year questions from all APPSC Prelims papers and compare patterns with UPSC Prelims PYQ to identify overlapping topics.