Related Questions

City High School must put together a debating team consisting of four debaters.There are candidates of equal ability : X,Y and Z who are all seniors; and A,B,C and D who are all juniors..The school requires that there should be two seniors and two juniors in the team.It is also necessary that all of the debaters be able to work with one another. *Debaters Y and A cannot work together. *Debaters Z and C cannot work together. *Debaters A and B cannot work together. which of the following statements must be false? 1.Debaters Y and C are never selected together. 2.Debaters Z and D are never selected together. 3.Debaters Z and D are never selected together.
A Only I
B Only II
C Only III
D All of these
A can do a work in 12 days and B in 24 days. If they work on it together for 4 days, then what fraction of work is left?
A 1\/3
B 1\/2
C 1\/4
D 1\/5
A can do a work in 24 days and B in 40 days. If they work on it together for 10 days, then what fraction of work is left?
A 1\/2
B 1\/3
C 2\/3
D 3\/4
A can do a work in 36 days and B in 12 days. If they work on it together for 3 days, then what fraction of work is left?
A 2\/3
B 1\/3
C 1\/4
D 1\/5
A can do a work in 15 days and B in 20 days. If they work on it together for 6 days, then what fraction of work is left?
A 1\/4
B 2\/9
C 1\/5
D 3\/10
P and Q together can make a door in 12 days. They started the work together but after 8 days P left the work. The remaining work is completed by Q alone in 7 more days. In how many days can P alone complete the entire work?
A 21
B 24
C 28
D 32
If the numerator of a fraction is increased by 150% and the denominator of a fraction increased by 200% fraction becomes 10/19. Find the fraction.
A 12/17
B 10/16
C 12/19
D 9/11
If 1 is added to the numerator of a fraction, the fraction becomes 1. If 1 is added to the denominator, the fraction becomes 12Find the fraction.
A 13
B 12
C 23
D 34
৭০ লিটার অকটেন-পেট্রোল মিশ্রণে পেট্রোল ও অকটেনের অনুপাত ৫ঃ২ । এই মিশ্রণে আর কত লিটার অকটেন মিশালে পেট্রোল ও অকটেনের অনুপাত ২ঃ১ হবে?
A ৫
B ৭
C ১০
D কোনোটিই নয়
পানি ও চিনির একটি মিশ্রণে পানি ও চিনির অনুপাত ৮ঃ৩। যদি এটাতে ২ কেজি চিনি যোগ করা হয় তাহলে তাদের অনুপাত হয় ২ঃ১। মূল দ্রবণে চিনির পরিমাণ কত কেজি ছিল ?
A ৪
B ৪.৫
C ৬
D ৫

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