TJ Prep Problems

TJ test prep practice problems  for our students and readers. The problems provide a very small sampling of what Optimal TJ Prep students work with.

A Probability Question for TJ/AOS/Blair Prep (Easy). Target Time 25-50 seconds.

Two Magic spinners, one with letters and the other with numbers, are available as shown in the figure below. Once spun,, the pointer in each stops only at a letter or a number as appropriate. Nasim first spins I and then spins II. Please answer the following questions:

1. How many different outcomes are possible if both are spun?

2. What is the probability of getting a vowel followed by an even number?

3. What is the probability of getting a multiple of 3 followed by an A or a D?