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Quantitative: Number Properties Flashcards

7 cards from real GMAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Quantitative: Number Properties flashcards as text

  1. If a number leaves a remainder of 3 when divided by 5, what is its remainder when divided by 5 after adding 4?

    Answer: 2

    Adding 4 to a remainder of 3 gives 7, and 7 mod 5 = 2.

  2. Which of the following must be divisible by 6?

    Answer: Product of three consecutive integers

    Three consecutive integers always include a multiple of 2 and a multiple of 3, so their product is divisible by 6.

  3. What is the units digit of 9^10?

    Answer: 1

    Powers of 9 alternate 9,1; even exponents end in 1, so 9^10 ends in 1.

  4. If the product of two integers is negative, then:

    Answer: One is positive and one negative

    A negative product results only when exactly one factor is negative.

  5. How many factors of 2 are in the prime factorization of 24?

    Answer: 3

    Since 24 = 2^3 * 3, there are three factors of 2.

  6. Which value of n makes 3n + 1 divisible by 4?

    Answer: n = 1

    When n = 1, 3(1) + 1 = 4, which is divisible by 4.

  7. What is the remainder when 100 is divided by 9?

    Answer: 1

    Since 9 * 11 = 99, the remainder is 100 - 99 = 1.