1. EASY

If 2 coins are tossed, what is the probability of obtaining 2 heads?

  1. \(\frac{1}{4}\)
  2. \(\frac{1}{2}\)
  3. \(\frac{3}{4}\)
  4. \(\frac{1}{8}\)
  5. \(\frac{3}{8}\)
 
2. MEDIUM

The probability of an event is one in every twenty. The probability of the two events occurring in a row is \(\frac{1}{20}\times\frac{1}{20}\). What is the probability of the 10th event?

  1. 0.00001%
  2. 0.0000001%
  3. 0.00000001%
  4. 0.000000001%
  5. 5%
 
3. MEDIUM

A fair six-sided die is rolled 3 times. What is the probability that 6 shows up in at least 1 roll?

  1. \(\frac{1}{2}\)
  2. \(\frac{1}{6}\)
  3. \(\frac{5}{6}\)
  4. \(\frac{91}{216}\)
  5. \(\frac{1}{12}\)
 
4. MEDIUM

An ice cream truck has a 20% chance of coming on Monday, 50% on Wednesday, and 100% on Friday. What is the probability of it coming on Monday, Wednesday, and Friday?

  1. 80%
  2. 100%
  3. 10%
  4. 50%
  5. 20%
 
5. HARD

There are 13 spades in a regular 52 card deck. What is the probability of drawing 2 spades in a row?

  1. 5.9%
  2. 4.4%
  3. 3.4%
  4. 7.2%
  5. 6.3%