100+ Number, Ranking &Time Sequence Test Questions Answers - 1
In a row of girls, Sita and Monika occupy the ninth place from the right end and tenth place from the left end, respectively. If they interchange their places, Sita and Monika occupy seventeenth place from the right and eighteenth place from the left, respectively. How many girls are there in the row?
Since Sita and Monika exchange places, so Sita’s new position is the same as Monika’s earlier position.
This position is 17th from the right and 10th from the left.
∴ Number of girls in the row = (16 + 1 + 9) = 26.
Rohan and Suresh are ranked seventh and eleventh respectively from the top in a class of 31 students. What will be their respective ranks from the bottom in the class?
(A) 20th and 24th
(B) 24th and 20th
(C) 26th and 22nd
(D) 25th and 21st
Number of students behind Rohan in rank = (31 – 7) = 24.
So, Rohan is 25th from the bottom.
Number of students behind Suresh in rank = (31 – 11) = 20.
So, Suresh is 21st from the bottom.
Sankar ranks seventh from the top and twenty eighth from the bottom in a class. How many students are there in the class?
Clearly, number of students in the class = (6 + 1 + 27) = 34.
In a row of girls, Shamala is eighth from the left, and Meena is seventeenth from the right. If they interchange their positions, Shamala becomes fourteenth from the left. How many girls are there in the row?
Since Shamala and Meena interchange positions, so Shamala’s new position is the same as Meena’s earlier position.
This position is 14th from the left (Shamala’s new position) and 17th from the right (Meena’s earlier position).
∴ Number of girls in the row = (13 + 1 + 16) = 30.
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