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Matt71

  • 3 years ago

How many times does the digit 1 appear in the number 500, solution please

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  1. moneybird
    • 3 years ago
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    0

  2. bob06
    • 3 years ago
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    none

  3. Matt71
    • 3 years ago
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    Nonononono, I mean 1,2,3,4,5....500

  4. Ishaan94
    • 3 years ago
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    lol

  5. Sriram
    • 3 years ago
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    19*5+100

  6. bob06
    • 3 years ago
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    oooooooooo 1,11,12,13,14,15,16,17,18,19,21,31,41,51,61,71,81,91,101,111,112,113,114,115,116,117,118,119,121,131,141,151,161,171,181,191...........

  7. myininaya
    • 3 years ago
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    i don't get it

  8. Sriram
    • 3 years ago
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    19*5+100=195

  9. agdgdgdgwngo
    • 3 years ago
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    @sriram how did you work that out?

  10. Ishaan94
    • 3 years ago
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    Yeah How did you work that out so fast

  11. myininaya
    • 3 years ago
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    i don't understand the question there is no digit 1 in 500 500 has the digits 5, 0 (multiplicity 2)

  12. sandra
    • 3 years ago
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    the question is the numbers 1-500

  13. Ishaan94
    • 3 years ago
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    ihe meant 1 to 500 @myininaya

  14. agdgdgdgwngo
    • 3 years ago
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    @myininaya He meant in the range 1,2,...,500

  15. myininaya
    • 3 years ago
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    ok

  16. bob06
    • 3 years ago
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    200 times right?

  17. pokemon23
    • 3 years ago
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    bob96 can you help me in math?

  18. Matt71
    • 3 years ago
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    bob06, solution?

  19. bob06
    • 3 years ago
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    http://au.answers.yahoo.com/question/index?qid=20100908033614AADkMBv

  20. bob06
    • 3 years ago
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    @pokemon sure but make it fast ;)

  21. Sriram
    • 3 years ago
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    look from 1 to 100 10 digits end wid 1 (,1,11,21,31...91 n 10 srart wid 1 (10,11,12...19) hence 20 1,s from 1to 99 same for 200 to 299 and 300 to 399 & 400 to 500 bt100 to 199 20 ones wid 100 ones in hundreds place hence 20*5 +100=200 previous ans wrong

  22. Matt71
    • 3 years ago
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    good answer, but you got a solution without using computers?

  23. agdgdgdgwngo
    • 3 years ago
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    I've got a solution using computers :-D There's also an analytical solution without computers.

  24. Sriram
    • 3 years ago
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    yep

  25. agdgdgdgwngo
    • 3 years ago
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    Sriram is right

  26. Matt71
    • 3 years ago
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    Well, got my answer thanks to all

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