Arithmetic Reasoning

Probability

If Dan flips a coin twice, what is the probability of landing on heads 2 times?

  1. ¼
  2. ½
  3. ¾
  4. 1

Yesterday I presented a question on probability.  As an ASVAB tutor, I see the importance of preparing my students for questions on probability.  Probability is one of the subtopics that can appear on the Arithmetic Reasoning section of the ASVAB.  It is one of the 15 subtopics I cover in my book, The ASVAB Tutor’s Arithmetic Reasoning Study Guide.  Figuring out probability involves figuring out what the chances of something happening are.  A coin has 2 sides, heads and tails.  There are 2 outcomes in flipping a coin.

The chances of landing on heads in one flip is 1/2.

If you flip a coin twice, the chances of landing on heads two times is ½ x ½ = ¼

Final answer is ¼.

Did you know how to find the probability in this question?