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05 Jun 2018, 11:52
Kudos
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
71% (01:22) correct
29%
(01:11)
wrong
based on 661
sessions
History
Date
Time
Result
Not Attempted Yet
There are some boys and girls present in a class apart from teacher, and the teacher decides to choose two students for a certain experiment, in how many ways can she choose a boy and a girl for the same?
(1) Number of boys is 20% less than the number of girls in the class.
(2) Number of girls is 25% more than the number of boys in the class.
(1) Number of boys is 20% less than the number of girls in the class.
(2) Number of girls is 25% more than the number of boys in the class.
05 Jun 2018, 13:43
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amanvermagmat
There are some boys and girls in the class. The teacher has to choose 1 girl and 1 boy
for a certain experiment. We have been asked to find how many ways the teacher can
choose a boy and a girl for the class?
Let's assume the number of boys to be B and the number of girls to be G
1. B = 0.8G (Without knowing any values for the number of boys/girls
we can't find out how many ways can the teacher choose a girl and a boy (Insufficient)
2. G = 1.25B (Without knowing any values for the number of boys/girls
we can't find out how many ways can the teacher choose a girl and a boy (Insufficient)
Even on combining the information present in both the statements, we
don't have a number value for the number of girls or boys. Without this
number, we cannot find how many ways can the teacher choose a girl and a boy (Insufficient - Option E)
14 Nov 2023, 07:19
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This post was generated automatically.
