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Triangular number: Quiz

  

Question 1:
Which of the following titles did Triangular number have?
Triangular orthobicupola
Triangular Number
Triangular Grid
Triangular dipyramid

Question 2: In ________, the digital root of a triangular number is always 1, 3, 6 or 9.
Positional notationDuodecimalArabic numeralsDecimal

Question 3: Miraculous Draught of Fish, an episode from the ________ involving the triangular number 153; the triangular form of this number was thought by Saint Augustine to be important in interpreting this passage.
Apostle (Christian)JesusNew TestamentGospel

Question 4: Most simply, the sum of two consecutive triangular numbers is a ________, with the sum being the square of the difference between the two.
9 (number)1 (number)Square number4 (number)

Question 5: The difference of two positive triangular numbers is a ________.
Polite numberNumber theoryPerfect numberConcrete Mathematics

Question 6: Wacław Franciszek Sierpiński posed a question if there exist four distinct triangular numbers in ________.
Geometric progressionComplex numberPrime numberExponential function

Question 7: In 1796, German mathematician and scientist ________ discovered that every positive integer is representable as a sum of at most three triangular numbers, writing in his diary his famous words, "Heureka!
Isaac NewtonBenjamin FranklinJean le Rond d'AlembertCarl Friedrich Gauss

Question 8: A triangle number is, equivalently, the sum of the n ________ from 1 to n.
Natural numberCardinal numberReal numberInteger
















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