state gov APPSC (ఆంధ్రప్రదేశ్) Group 2 (Pre + Mains) Mock Test 2023 Quantitative Aptitude Number System Divisibility and Remainder
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 :
1
45
2
63
3
72
4
81