21. | | In a class, Neha's rank is 21st from the top and 30th from the bottom. What is the total number of students in that class? | | (a)49 | | (b)50 | | (c)51 | | (d)52 |
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Answer is: BTotal number of students = total of both side rank - 1
Total number of students = 21 + 30 – 1 = 50.