Class Composition Analysis
The problem states there are 70 students in the class. It also mentions that the number of boys equals the number of girls.
- Total students = 70
- Number of boys = Number of girls
- Therefore, Number of boys = \(\frac{70}{2} = 35\)
- And, Number of girls = \(\frac{70}{2} = 35\)
Suman's Position and Ahead Students
Suman's position is given as 19th from the top. This means there are 18 students ahead of Suman in the class.
The problem also specifies that there are 10 girls ahead of Suman.
- Suman's rank from top = 19
- Students ahead of Suman = Rank - 1 = \(19 - 1 = 18\)
- Number of girls ahead of Suman = 10
We can now determine the number of boys who are ahead of Suman:
- Boys ahead of Suman = Total students ahead - Girls ahead of Suman
- Boys ahead of Suman = \(18 - 10 = 8\)
Calculating Boys Behind Suman
We know the total number of boys in the class and the number of boys ahead of Suman. We can now calculate the number of boys behind Suman.
- Total number of boys = 35
- Number of boys ahead of Suman = 8
- Number of boys behind Suman = Total boys - Boys ahead of Suman
- Number of boys behind Suman = \(35 - 8 = 27\)
So, there are 27 boys behind Suman.
Similar Questions
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Important Questions from Ordering and Ranking
Examine the information given in the following paragraph and answer the items that follow: Guest lectures on five subjects viz., Economics, History, Statistics, English and Mathematics have to be arranged in a week from Monday to Friday. Only one lecture can be arranged on each day. Economics cannot be scheduled on Tuesday. Guest faculty for History is available only on Tuesday. Mathematics lecture has to be scheduled immediately after the day of Economics lecture. English lecture has to be scheduled immediately before the day of Economics lecture. Which lecture is scheduled on Monday?
Examine the information given in the following paragraph and answer the items that follow: Guest lectures on five subjects viz., Economics, History, Statistics, English and Mathematics have to be arranged in a week from Monday to Friday. Only one lecture can be arranged on each day. Economics cannot be scheduled on Tuesday. Guest faculty for History is available only on Tuesday. Mathematics lecture has to be scheduled immediately after the day of Economics lecture. English lecture has to be scheduled immediately before the day of Economics lecture. Which lecture is scheduled between Statistics and English?
Examine the information given in the following paragraph and answer the items that follow: Guest lectures on five subjects viz., Economics, History, Statistics, English and Mathematics have to be arranged in a week from Monday to Friday. Only one lecture can be arranged on each day. Economics cannot be scheduled on Tuesday. Guest faculty for History is available only on Tuesday. Mathematics lecture has to be scheduled immediately after the day of Economics lecture. English lecture has to be scheduled immediately before the day of Economics lecture. Which lecture is the last one in the week?
Examine the information given in the following paragraph and answer the items that follow: Guest lectures on five subjects viz., Economics, History, Statistics, English and Mathematics have to be arranged in a week from Monday to Friday. Only one lecture can be arranged on each day. Economics cannot be scheduled on Tuesday. Guest faculty for History is available only on Tuesday. Mathematics lecture has to be scheduled immediately after the day of Economics lecture. English lecture has to be scheduled immediately before the day of Economics lecture. Which lecture is scheduled on Wednesday?
In a row 'A' is in the 11th position from the left and 'B' is in the 10th position from the right. If 'A' and 'B' interchange, then 'A' becomes 18th from the left.
How many persons are there in the row other than 'A' and 'B'?
