Latest RRB Aptitude Question SOLUTION: 14) College T has 1000 students, of the 200 students majoring in one or more sciences, 130 are majoring in chemistry and 150 are majoring in biology. If atleast 30 are not majoring

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Previous Question: 13) Country club has an indoor swimming club. 30% of members of a swim club passed the lifesaving test. Among the members who have not passed the test, 12 have taken the preparatory course and 30 have not taken the test. How many members are there in the swim club? a) 60 b) 80 c) 110 d) 120 Next Question: 15) Guitar strings often go dead- become less responsive and bright in tone after a few days of intense use. A researcher whose son is a guitarist hypothesized that dirt and oil, rather than changes in the material properties of string were responsible. Which of the following investigations is most likely to yield significant information that would help the researcher evaluate his hypothesis? a) Determining whether a metal alloy is used to make their strings go dead faster than do folk guitarists. b) Determining whether identical string lengths of the same guage, go dead at different rates when strung on various brands of guitars. c) Determining whether a dead string and a new string produce different qualities of sound. d) Determining whether smearing various substances on new guitar strings causes them to go dead.

(#M40026074) RRB question 2011 QUESTION Keep an EYE

14) College T has 1000 students, of the 200 students majoring in one or more sciences, 130 are majoring in chemistry and 150 are majoring in biology. If atleast 30 are not majoring in either chemistry or biology, then the number of students majoring both in chemistry and biology could be any number from:
a) 110 to 130
b) 40 to 70
c) 110 to 150
d) 20 to 30: Asked In RRB MAN (11 years ago); Unsolved; Is this Puzzle helpful? (1) (2) Submit Your Solution

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Previous Question: 13) Country club has an indoor swimming club. 30% of members of a swim club passed the lifesaving test. Among the members who have not passed the test, 12 have taken the preparatory course and 30 have not taken the test. How many members are there in the swim club? a) 60 b) 80 c) 110 d) 120 Next Question: 15) Guitar strings often go dead- become less responsive and bright in tone after a few days of intense use. A researcher whose son is a guitarist hypothesized that dirt and oil, rather than changes in the material properties of string were responsible. Which of the following investigations is most likely to yield significant information that would help the researcher evaluate his hypothesis? a) Determining whether a metal alloy is used to make their strings go dead faster than do folk guitarists. b) Determining whether identical string lengths of the same guage, go dead at different rates when strung on various brands of guitars. c) Determining whether a dead string and a new string produce different qualities of sound. d) Determining whether smearing various substances on new guitar strings causes them to go dead.

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