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Omniscience Group Title

If a random selection is made from 1,2,3,4,5,6 where the digits cannot be repeated, find the probability that the number selected is greater than 4500

  • 2 years ago
  • 2 years ago

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  1. apple_pi Group Title
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    how many numbers are selected? 4?

    • 2 years ago
  2. Omniscience Group Title
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    yeah 4 digits; i forgot to mention that sorry

    • 2 years ago
  3. apple_pi Group Title
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    well if > 4500, there are two cases: 1: first number = 4, second = 5 2: first number > 4

    • 2 years ago
  4. Omniscience Group Title
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    isnt the first case 4,5 ,6?

    • 2 years ago
  5. Ishaan94 Group Title
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    2C1*6P4 + 2C1*5P2?

    • 2 years ago
  6. Omniscience Group Title
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    nope

    • 2 years ago
  7. Ishaan94 Group Title
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    Are you sure?

    • 2 years ago
  8. Omniscience Group Title
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    yes itcant be that high lol the probability is 2/5 and from what you got is 14440/360

    • 2 years ago
  9. Omniscience Group Title
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    wait from what you got is 760/360; still not right

    • 2 years ago
  10. IsraelYkb Group Title
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    (12*6)/(6*5*4*3)

    • 2 years ago
  11. IsraelYkb Group Title
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    mine 72/360.

    • 2 years ago
  12. Omniscience Group Title
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    i got that as well; still not right

    • 2 years ago
  13. Ishaan94 Group Title
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    I am sorry. I blew it :( First Case. When first digit is greater than 4 i.e {5,6}. 2C1*(5*4*3) Second Case. When first digit is 4, and second is 5. 4*3

    • 2 years ago
  14. IsraelYkb Group Title
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    @Omniscience 2/5 is not right?

    • 2 years ago
  15. Omniscience Group Title
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    72/360 = 1/5 still not right..

    • 2 years ago
  16. Ishaan94 Group Title
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    Second Case should be 2*4*3 as the second could be 6 also. I believe I have got the answer.

    • 2 years ago
  17. Ishaan94 Group Title
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    ... second digit* could be ...

    • 2 years ago
  18. Omniscience Group Title
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    yes ishaan got it. thanks

    • 2 years ago
  19. RadEn Group Title
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    all case : |dw:1347236931812:dw|

    • 2 years ago
  20. IsraelYkb Group Title
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    |dw:1347266631816:dw|

    • 2 years ago
  21. IsraelYkb Group Title
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    2*(12)+120

    • 2 years ago
  22. IsraelYkb Group Title
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    I GOT IT!!!!!!!!!!!!!!!!

    • 2 years ago
  23. IsraelYkb Group Title
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    144 ways out of 360

    • 2 years ago
  24. RadEn Group Title
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    why, 2*12?

    • 2 years ago
  25. IsraelYkb Group Title
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    oh....|dw:1347267287282:dw| that's why

    • 2 years ago
  26. IsraelYkb Group Title
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    that's 1*2*4*3 same as 2*12

    • 2 years ago
  27. RadEn Group Title
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    oh, yea... i am forget that |4|6|...|...| should can be selected ... lol thanks @IsraelYkb

    • 2 years ago
  28. IsraelYkb Group Title
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    and using 5 and 6 it's very easy it's just 2*5*4*3

    • 2 years ago
  29. RadEn Group Title
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    yea, that's i know...

    • 2 years ago
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