Latest Tech Mahindra Aptitude Question SOLUTION: How many 7s are there in the following series which are not immediately following by 3 but immediately preceded by 8? 8 9 8 7 6 2 2 6 3 2 6 9 7 3 2 8 7 2 7 7 8 7 3 7 7 9 4 a) Nil