Question

How many individuals in this layout can be reached by just one individual?

• A. 3
• B. 5
• C. 7
• D. 8
• A. They can be reached by all the individuals in their own row and column
• B. They can be reached by at least 4 individuals
• C. They can be reached by at least one individual
• D. They cannot be reached by anyone
• A. the last row
• B. the fourth row
• C. the fourth column
• D. the middle column
• A. Each row has an individual who can be reached by 5 or more individuals
• B. Each row has an individual who cannot be reached by anyone
• C. Each row has at least two individuals who can be reached by an equal number of individuals
• D. All individuals at the height of 9 m can be reached by at least 5 individuals

Answer 1

The Correct Option is C

The heights of the platforms given is as below
 

6	1	2	4	3
9	5	3	2	8
7	8	4	6	5
3	9	5	1	2
1	7	6	3	9

The count of individuals who can be contacted by only one person is marked.
 

6	1	\(\textcircled {2}\)	4	3
9	5	3	2	8
\(\textcircled {7}\)	8	\(\textcircled {4}\)	6	\(\textcircled {5}\)
\(\textcircled {3}\)	9	5	1	\(\textcircled {2}\)
1	7	6	\(\textcircled {3}\)	9

Persons Reachable by Only One Individual

Finding

From the given arrangement and conditions, it is determined that: \[ \boxed{\text{A total of 7 persons can be reached by exactly one individual.}} \]

Interpretation

This means there are 7 distinct persons in the setup who have only a single possible path of access from another person, and no other individual can reach them under the given constraints.

Answer 2

The heights of the platforms given is as below
 

6	1	2	4	3
9	5	3	2	8
7	8	4	6	5
3	9	5	1	2
1	7	6	3	9

Reachability Constraint for Height 1 

Step 1: Given condition

According to condition (II), an individual can only be reached if the platform height difference between them and the person attempting to reach them satisfies the stated rules.

Step 2: Implication for height 1

If an individual is at a platform of height 1, any attempt to reach them will violate condition (II). Therefore: \[ \text{No individual at height 1 can be reached by anyone.} \]

Step 3: Conclusion

This means that height 1 is an inherently **unreachable position** in the arrangement.

Answer 3

The heights of the platforms given is as below
 

6	1	2	4	3
9	5	3	2	8
7	8	4	6	5
3	9	5	1	2
1	7	6	3	9

Identifying Unreachable Individuals

Step 1: Observation

We are tasked with finding columns that contain individuals who cannot be reached by anyone.

Step 2: Analysis by columns

Upon checking all columns:

• Columns 1, 2, and 3 — No two individuals exist who are completely unreachable.
• Column 4 — Contains two individuals who cannot be reached by anyone.

Step 3: Specific individuals in Column 4

In Column 4:

• The individual at height 2
• The individual at height 1

are both completely unreachable.

Final Conclusion:

\[ \boxed{\text{Only Column 4 contains two unreachable individuals.}} \]

Answer 4

The heights of the platforms given is as below
 

6	1	2	4	3
9	5	3	2	8
7	8	4	6	5
3	9	5	1	2
1	7	6	3	9

Step 1: Check Statement 1

Statement 1 claims that an individual in row 1 can be reached by 5 or more individuals. This is incorrect because, in row 1, no individual can be reached by that many people.

Step 2: Check Statement 2

Statement 2 claims that in row 3 there exists an individual who cannot be reached by anyone. This is incorrect because every individual in row 3 can be reached by at least one person.

Step 3: Check Statement 4 

Statement 4 claims that the individual at height 9 in column 1 can be reached by more than 4 individuals. This is incorrect because this individual can be reached by exactly 4 people, not more.

Step 4: Valid statement

The only statement that holds true is: \[ \boxed{\text{Statement 3 is correct.}} \]