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

\(\frac{1}{4}\)

\(\frac{1}{2}\)

\(\frac{3}{4}\)

\(\frac{1}{8}\)

\(\frac{3}{8}\)

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?

0.00001%

0.0000001%

0.00000001%

0.000000001%

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?

\(\frac{1}{2}\)

\(\frac{1}{6}\)

\(\frac{5}{6}\)

\(\frac{91}{216}\)

\(\frac{1}{12}\)

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?

80%

100%

10%

50%

20%

5.

HARD

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