GRE Quantitative Flashcards: Integer Properties Divisibility

Study Integer Properties Divisibility in GRE Quantitative with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

What is the basic divisibility test for $3$ in base $10$ ?

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ANSWER

Divisible by $3$ iff the sum of digits is divisible by $3$ . This rule works because $10 \equiv 1 \pmod{3}$ , so the number modulo 3 equals the digit sum modulo 3.

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GRE Quantitative: Arithmetic and Number Properties

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What this deck covers

This deck focuses on Integer Properties Divisibility, giving you a quick way to review the definitions, rules, and examples that matter most for GRE Quantitative.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Practice questions

1 of 15Practice questions for this set

Integer

t

is such that

t^2

is divisible by

12

. Which of the following must be true?

Choose an answer

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