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  1. ... primes must end in 1 , 3, 7, or 9. (..., and if the sum is divisible by... the only other prime less than √ 100 = 10, that's all you have left to eliminate, because any...already stricken from the list), because any...

    3 Answers · Science & Mathematics · 04/10/2012

  2. ...0 for any b in the range 1 to 100 , so this case doesn't work...3 + y^3 must be a positive prime . 2) If a is prime then a^2 - 1 = 3b, so (a - 1 )(a + 1 ) = 3b... primes except 3. So the sum of all a = sum of all primes ...

    2 Answers · Science & Mathematics · 20/07/2013

  3. ...you can take away 100 and four ...and 19 -- for a sum of 50 -- say, 1 + 3 + 7 + 11...you were to take away the digit " 1 " from each of the numbers 11, 13, 15, 17...the first prime summand." "...

    2 Answers · Science & Mathematics · 27/03/2010

  4. ...this choice is different from others. You...that most people say that the prime nos. less than 1 lakh (or 100 thousand) whose digital sum is 2 are 11...have tried extensively to find them and check...

    4 Answers · Science & Mathematics · 09/10/2006

  5. ... 1 factors ( 1 , p, p^2, ..., p^n...90) = 5, F( 100 ) = 5, F(120.... 4) From #2, p^4 has...t think of any way to express 11 as the sum of three distinct primes .) I hope this...

    1 Answers · Science & Mathematics · 21/08/2012

  6. ...have students make a table listing the numbers from 1 to 100 in Column 1 . In Column... Column 3, have them find the sum of the factors (without including the...

    5 Answers · Science & Mathematics · 24/12/2012

  7. ...primesum to itself to keep the previous sum (s). So, primesum... each time a prime number ...primecount = primecount + 1 (or primecount++). ... sum of all the prime numbers between 1 - 100 and the number...

    1 Answers · Education & Reference · 20/05/2007

  8. ... your code from above, fixed the... 17 as a sum with 10 as the input...as expected. To test for edge cases...;< prime (i) <...21 : 77 22 : 77 23 : 100 24 : 100 25 : 100 26...

    2 Answers · Computers & Internet · 05/11/2014

  9. ...two sets of numbers containing numbers from 1 to 9 ( 1 ,2,3,4....9) then you can sum their squares up to get the form of a...90 3^2 + 9^2 33 97 4^2 + 9^2 34 98 7^2 + 7^2 35 100 6^2 + 8^2

    2 Answers · Science & Mathematics · 21/02/2011

  10. ...have no reason to expect the next...of the form 6k - 1 or 6k + 1 , then... from the roots...39;s for which 100 ^2n - 100 ^n + 1 ...of being prime are those.... such numbers are way...would be 0.8 * ( sum 1 /k) where k...

    6 Answers · Science & Mathematics · 27/11/2011

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