Practice Test GeeksMDTP - Mathematics Diagnostic Testing Project Practice Test
← All MDTP Flashcard Decks

Probability Flashcards

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

Read the first 6 Probability flashcards as text

  1. A jar has 4 red and 6 blue marbles. One marble is drawn without replacement. What is the probability both draws are red?

    Answer: 2/15

    P(red then red) = (4/10) × (3/9) = 12/90 = 2/15.

  2. Which value cannot be a probability?

    Answer: 1.5

    Probabilities must be between 0 and 1 inclusive; 1.5 exceeds this range.

  3. How many different 3-digit combinations can be formed from the digits 1–9 if repetition is allowed?

    Answer: 729

    With repetition allowed, there are 9 × 9 × 9 = 9³ = 729 combinations.

  4. P(A) = 0.6. What is P(A')?

    Answer: 0.4

    The complement rule states P(A') = 1 - P(A) = 1 - 0.6 = 0.4.

  5. In how many ways can a committee of 2 be chosen from a group of 6 people?

    Answer: 15

    Order doesn't matter, so C(6,2) = 6!/(2!4!) = 15.

  6. A student guesses randomly on a 4-choice multiple-choice question. What is the probability of guessing wrong?

    Answer: 3/4

    P(correct) = 1/4, so P(wrong) = 1 - 1/4 = 3/4.

How this page was made: written with AI tools. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy

Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

  1. mdtp.ucsd.edu — Registration, test dates · verified Oct 2026
  2. mdtp.ucsd.edu — Test delivery, exam format · verified Oct 2026
  3. mdtp.ucsd.edu — Eligibility · verified Oct 2026