The problem consists of three parts. (b)(i): Two fair-sided coins are tossed. List all the four possible outcomes using H for Heads and T for Tails. (b)(ii): Find the probability of getting two Heads or two Tails. (c): Solve the equation $2^{2x-1} = 64$.

Probability and StatisticsProbabilityCoin TossExponentsAlgebraic Equations
2025/7/7

1. Problem Description

The problem consists of three parts.
(b)(i): Two fair-sided coins are tossed. List all the four possible outcomes using H for Heads and T for Tails.
(b)(ii): Find the probability of getting two Heads or two Tails.
(c): Solve the equation 22x1=642^{2x-1} = 64.

2. Solution Steps

(b)(i): The possible outcomes of tossing two coins are: HH, HT, TH, TT.
(b)(ii): There are four possible outcomes: HH, HT, TH, TT.
The event of getting two Heads is HH. The event of getting two Tails is TT.
The number of favorable outcomes for two Heads or two Tails is

2. The total number of possible outcomes is

4. The probability of getting two Heads or two Tails is $\frac{2}{4} = \frac{1}{2}$.

(c): We have the equation 22x1=642^{2x-1} = 64.
Since 64=2664 = 2^6, we can rewrite the equation as:
22x1=262^{2x-1} = 2^6.
Therefore, the exponents must be equal:
2x1=62x - 1 = 6.
Add 1 to both sides:
2x=72x = 7.
Divide both sides by 2:
x=72=3.5x = \frac{7}{2} = 3.5.

3. Final Answer

(b)(i): HH, HT, TH, TT
(b)(ii): 12\frac{1}{2}
(c): x=72x = \frac{7}{2}

Related problems in "Probability and Statistics"

We have a bag with 7 red discs and 5 blue discs. Two discs are drawn at random without replacement. ...

ProbabilityConditional ProbabilityWithout ReplacementCombinatorics
2025/7/15

The problem consists of two parts. (a) A biased square spinner has the following probabilities: Scor...

ProbabilityExpected ValueIndependent EventsConditional ProbabilityDiscrete Probability
2025/7/15

The problem consists of two independent probability questions: (c)(i) A bag contains 15 red beads an...

ProbabilityIndependent EventsConditional ProbabilityWithout Replacement
2025/7/15

We are asked to solve three probability problems: (b) A bag contains 54 red marbles and some blue ma...

ProbabilityConditional ProbabilityCombinatorics
2025/7/15

The problem describes a class of 32 students. We are given information about how many students study...

ProbabilityVenn DiagramsConditional ProbabilitySet Theory
2025/7/15

The problem is based on a Venn diagram representing a group of 50 students. The Venn diagram shows t...

Venn DiagramsSet TheoryProbabilityConditional Probability
2025/7/15

The problem states that the probability of Shalini being late for school on any day is $1/6$. (i) We...

ProbabilityConditional ProbabilityTree Diagrams
2025/7/15

The problem states that a bag contains green, red, and blue balls. Anna picks a ball at random and p...

ProbabilityProbability DistributionsBasic ProbabilityConditional ProbabilityExpected Value
2025/7/14

The problem provides a table showing the weekly sales of 1000 traders at a flea market, categorized ...

Frequency DistributionFrequency DensityModal ClassData Analysis
2025/7/8

The problem asks us to perform a pooled t-test to determine if the average monthly sales of Product ...

Hypothesis Testingt-testPooled t-testStatistical SignificanceOne-tailed testSample Statistics
2025/7/8