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Digit sum
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#	Item
11	Second International Olympiad, [removed]Determine all three-digit numbers N having the property that N is divisible by 11, and N/11 is equal to the sum of the squares of the digits of N[removed]. Add to Reading List Source URL: media.hotnews.ro Language: English - Date: 2014-05-19 06:13:46 Trigonometry Quadrilaterals Curves Right triangle Triangle Cone Altitude Trapezoid Circle Geometry Triangles Triangle geometry
12	Fourteenth International Olympiad, [removed]Prove that from a set of ten distinct two-digit numbers (in the decimal system), it is possible to select two disjoint subsets whose members have the same sum[removed]. Add to Reading List Source URL: media.hotnews.ro Language: English - Date: 2014-05-19 06:14:56 Maths24 COMPASS/Sample Code Character sets
13	Numberless Kakuro (Cross Sums) Replace each letter with a unique digit and then solve the formed Cross Sums puzzle: Enter a single digit from 1 to 9 into each empty square so that the sum of the digits in each across and Add to Reading List Source URL: www.otuzoyun.com - Date: 2007-09-04 15:00:17
14	Warm-Up 12 Solutions 1. $ [removed]or 2123 Add to Reading List Source URL: www.agmath.com Language: English - Date: 2014-04-03 18:02:15 Elementary arithmetic Mathematical series Divisibility rule Elementary number theory Digit sum Prime number Factorial Pi Cube Mathematics Number theory Integer sequences
15	Microsoft Word - TenTricks Add to Reading List Source URL: agmath.com Language: English - Date: 2014-04-03 18:02:12 Elementary arithmetic Divisibility rule Division Elementary number theory Prime number Digit sum Number Factorial Dice Mathematics Number theory Integer sequences
16	Name________________________ Period _____ Number Theory Primes Add to Reading List Source URL: agmath.com Language: English - Date: 2014-04-03 18:01:45 Elementary number theory Numbers Divisibility rule 11 Prime number Divisor Digit sum Check digit Mathematics Arithmetic Division
17	1. What is the sum of all the x and y coordinates in the ordered pairs where the graph of y = 2x2 – 6x - 7 crosses each of the coordinate axis on the Cartesian plane? 2. Add to Reading List Source URL: agmath.com Language: English - Date: 2014-04-03 18:02:05 Division Complex analysis Pi Sphere Fraction Digit Mathematics Geometry Mathematical analysis
18	Warm-Up 12 Solutions 1. $ [removed]or 2123 Add to Reading List Source URL: agmath.com Language: English - Date: 2014-04-03 18:02:15 Elementary arithmetic Mathematical series Divisibility rule Elementary number theory Digit sum Prime number Factorial Pi Cube Mathematics Number theory Integer sequences
19	SEQUENCES OF CONSECUTIVE n-NIVEN NUMBERS* H. G. Grundmae Department of Mathematics, Bryn Mawr College, Bryn Mawr, PA 19010 Add to Reading List Source URL: www.fq.math.ca Language: English - Date: 2010-09-07 16:08:08 Harshad number Digit sum Sequence Pi Niven Ivan M. Niven Fermat number Mathematics Number theory Integer sequences

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