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
একজন চাকরিজীবীর আয় ও ব্যয়ের অনুপার ২০ঃ ১৫ হলে, তার মাসিক সঞ্চয় আয়ের শতকরা কত অংশ?
A ৩০%
B ১৫%
C ২০%
D ২৫%
একটি ট্রান্সফরমারের প্রাইমারি ও সেকেন্ডারি তারের ঘূর্ণনের অনুপাত 20ঃ 1 এবং সেকেন্ডারিতে 20 omega রোধ লাগানো আছে। যদি প্রাইমারিতে 220 V প্রয়োগ করা হয় তাহলে এর মধ্যে বিদ্যুৎ প্রবাহ হবে-
A 0.55 A
B 27.5 mA
C 27.5 A
D 5.5 mA
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 21 days and B in 42 days. If they work on it together for 7 days, then what fraction of work is left?
A 1\/3
B 1\/4
C 2\/3
D 1\/2
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
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

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