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anik1989

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  1. The probability of event E occur is 0.45 and event F will occur. QA: the probability of event F occur when event E will not occur QB:0.55
  2. The days of the consummate _____ are over: there are simply too many fields of knowledge for one person to master completely. here the blank is polymath. but how come?? before colon we can see that there polymaths( A person of great or varied learning) are over. so polymaths can not be existed now a days and after colon this connotation should be beard. but there is not
  3. i can not understand the last line
  4. so why 12 seconds mention here? what is the purpose of mntioning here? can you plz explain ?
  5. What is the probability that, twelve seconds from a randomly selected starting time, a certain digital clock will display a number of seconds x such that x (A) 19/60 (B) 3/10 © 1/5 (D) 11/60 (E) 1/6
  6. i am using greenlight. but there were a student help service then it would be more satisfactory. but overall it awesome
  7. brent is rock and greenlight is also rock
  8. anik1989

    probability

    Jack has a cube with 6 sides numbered 1 through 6. He rolls the cube repeatedly until the first time that the sum of all of his rolls is even, at which time he stops. (Note: it is possible to roll the cube just once.) What is the probability that Jack will need to roll the cube more than 2 times in order to get an even sum?
  9. There are 2 brothers among a group of 20 persons. In how many ways can the group be arranged around a circle so that there is exactly one person between the two brothers?
  10. anik1989

    Intiger problem

    How many integers between 1 and 300, inclusive, can be expressed as 'xy' , where x and y are integers greater than 1?
  11. Every band member is 15,16, or 17 years old. One third of the band members are 16, and twice as many band members are 16 as 15. Col A: The number of 17 years old band members Col B: The total number of 15 and 16 year old band memebers lets say any arbitrary no for the total band member . since 1/3 the band members are 16 , so lets say total no of band member , Total no = 300 so, no of band ,member whose age is 16 = 300(1/3) = 100. since, twice as many band members are 16 as 15 that means no of band ,member whose age is 15 = (100/2)= 50 lastly , no of band ,member whose age is 17 = 300-( no of band ,member whose age is 16+no of band ,member whose age is 15)= 300-(100+50) = 150 now col A= 150 COL B = 100+50=150 ans "C"
  12. The random variable X has the following continuous probability distribution in the range 0 X , as shown in the coordinate plane with X on the horizontal axis. ( the attachment contains the figure)
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