Greatest Integer and Remainder | TOMATO B.Stat Objective 113

Try this problem from I.S.I. B.Stat Entrance Objective Problem based on Greatest Integer and remainder.

Greatest integer and remainders (B.Stat Objective Question)


The greatest integer which, when dividing the integers 13511, 13903 and 14593 leaves the same remainder is

  • 98
  • 2
  • 7
  • 56

Key Concepts


GCD

Greatest Integer

Remainder

Check the Answer


Answer: 2.

B.Stat Objective Problem 113

Challenges and Thrills of Pre-College Mathematics by University Press

Try with Hints


here all numbers are odd

13511, 13903 and 14593 leaves different remainders when divided by 98, 56 and 7

13511, 13903 and 14593 leaves same remainder when divided by 2

then greatest integer 2.

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Remainders and Functions | AIME I, 1994 | Question 7

Try this beautiful problem from the American Invitational Mathematics Examination I, AIME I, 1994 based on Remainders and Functions.

Remainders and Functions - AIME I, 1994


The function f has the property that, for each real number x, \(f(x)+f(x-1)=x^{2}\) if f(19)=94, find the remainder when f(94) is divided by 1000.

  • is 107
  • is 561
  • is 840
  • cannot be determined from the given information

Key Concepts


Integers

Remainder

Functions

Check the Answer


Answer: is 561.

AIME I, 1994, Question 7

Elementary Number Theory by David Burton

Try with Hints


f(94)=\(94^{2}-f(93)=94^{2}-93^{2}+f(92)\)

=\(94^{2}-93^{2}+92^{2}-f(91)\)

=\((94^{2}-93^{2})+(92^{2}-91^{2})\)

\(+....+(22^{2}-21^{2})+20^{2}-f(19)\)

=94+93+.....+21+400-94

=4561

\(\Rightarrow\) remainder =561.

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