cat 2018 solutions slot 1
The Common Admission Test (CAT) is one of the most competitive exams in India, serving as a gateway to prestigious management programs. The 2018 edition of CAT was particularly challenging, with a diverse set of questions across various sections. This article provides detailed solutions for the questions in Slot 1 of the CAT 2018 exam. Quantitative Ability Question 1: Arithmetic Progression Problem: Find the sum of the first 20 terms of the arithmetic progression where the first term is 3 and the common difference is 4.
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cat 2018 solutions slot 1
The Common Admission Test (CAT) is one of the most competitive exams in India, serving as a gateway to prestigious management programs. The 2018 edition of CAT was particularly challenging, with a diverse set of questions across various sections. This article provides detailed solutions for the questions in Slot 1 of the CAT 2018 exam.
Quantitative Ability
Question 1: Arithmetic Progression
Problem: Find the sum of the first 20 terms of the arithmetic progression where the first term is 3 and the common difference is 4.
Solution:
- The formula for the sum of the first ( n ) terms of an arithmetic progression is: [ S_n = \frac{n}{2} \times (2a + (n-1)d) ]
- Here, ( a = 3 ), ( d = 4 ), and ( n = 20 ).
- Substitute the values into the formula: [ S_{20} = \frac{20}{2} \times (2 \times 3 + (20-1) \times 4) ]
- Simplify the expression: [ S_{20} = 10 \times (6 + 76) = 10 \times 82 = 820 ]
Answer: 820
Question 2: Geometry
Problem: A circle with center ( O ) has two chords ( AB ) and ( CD ) intersecting at ( E ). If ( AE = 6 ), ( EB = 4 ), and ( CE = 3 ), find ( ED ).
Solution:
- Using the property of intersecting chords in a circle: [ AE \times EB = CE \times ED ]
- Substitute the given values: [ 6 \times 4 = 3 \times ED ]
- Solve for ( ED ): [ ED = \frac{24}{3} = 8 ]
Answer: 8
Data Interpretation and Logical Reasoning
Question 1: Data Interpretation
Problem: A company’s annual report shows the following data for the last five years:
Year | Revenue (in millions) | Profit (in millions) |
---|---|---|
2014 | 100 | 10 |
2015 | 120 | 15 |
2016 | 150 | 20 |
2017 | 180 | 25 |
2018 | 200 | 30 |
Calculate the average annual growth rate of profit over the five years.
Solution:
- The formula for the compound annual growth rate (CAGR) is: [ CAGR = \left( \frac{P{\text{end}}}{P{\text{start}}} \right)^{\frac{1}{n}} - 1 ]
- Here, ( P{\text{end}} = 30 ), ( P{\text{start}} = 10 ), and ( n = 5 ).
- Substitute the values into the formula: [ CAGR = \left( \frac{30}{10} \right)^{\frac{1}{5}} - 1 = 3^{0.2} - 1 ]
- Calculate ( 3^{0.2} ): [ 3^{0.2} \approx 1.2457 ]
- Subtract 1 to find the CAGR: [ CAGR \approx 1.2457 - 1 = 0.2457 \approx 24.57\% ]
Answer: 24.57%
Question 2: Logical Reasoning
Problem: Five friends - A, B, C, D, and E - are sitting in a row. A and B are not sitting next to each other. C is sitting to the immediate right of D. Who is sitting at the extreme right end?
Solution:
- Given that C is sitting to the immediate right of D, possible arrangements are:
- D, C, _, _, _
- _, D, C, _, _
- _, _, D, C, _
- _, _, _, D, C
- Since A and B are not sitting next to each other, the only valid arrangement is:
- _, D, C, _, _
- Now, we need to place A and B such that they are not next to each other:
- A, D, C, B, E
Answer: E is sitting at the extreme right end.
Verbal Ability
Question 1: Reading Comprehension
Problem: Read the following passage and answer the question:
“The rapid advancement of technology has led to significant changes in the way we communicate. Social media platforms have become the primary means of interaction for many people, leading to a decline in face-to-face communication.”
Question: What is the primary reason for the decline in face-to-face communication?
Solution: The primary reason for the decline in face-to-face communication is the rapid advancement of technology, which has made social media platforms the primary means of interaction for many people.
Answer: Rapid advancement of technology
Question 2: Sentence Correction
Problem: Correct the following sentence: “The students was excited for the trip.”
Solution: The sentence should be corrected to: “The student was excited for the trip.”
Answer: The student was excited for the trip.
These solutions should help candidates understand the approach to solving the questions from CAT 2018 Slot 1. Practicing with such detailed solutions can significantly improve problem-solving skills and boost confidence for future exams.
previous saturday lotto results
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The Common Admission Test (CAT) is one of the most competitive exams in India, serving as a gateway to prestigious management programs. The CAT 2018 exam was particularly challenging, with a diverse set of questions across various sections. This article provides detailed solutions for the questions from Slot 1 of the CAT 2018 exam.
Quantitative Ability
Question 1: Arithmetic Progression
Problem: Find the sum of the first 20 terms of an arithmetic progression where the first term is 3 and the common difference is 4.
Solution:
- First term (a) = 3
- Common difference (d) = 4
- Number of terms (n) = 20
Using the formula for the sum of an arithmetic progression: [ S_n = \frac{n}{2} \times (2a + (n-1)d) ]
Substitute the values: [ S{20} = \frac{20}{2} \times (2 \times 3 + (20-1) \times 4) ] [ S{20} = 10 \times (6 + 76) ] [ S{20} = 10 \times 82 ] [ S{20} = 820 ]
Question 2: Geometry
Problem: A circle with radius 5 cm is inscribed in a square. Find the area of the square.
Solution:
- Radius of the circle ® = 5 cm
- Diameter of the circle = 2r = 10 cm
Since the circle is inscribed in the square, the diameter of the circle equals the side length of the square.
- Side length of the square = 10 cm
Using the formula for the area of a square: [ \text{Area} = \text{side length}^2 ] [ \text{Area} = 10^2 ] [ \text{Area} = 100 \text{ cm}^2 ]
Data Interpretation and Logical Reasoning
Question 1: Data Interpretation
Problem: Given a table with the sales figures of five different products over four quarters, determine the product with the highest total sales.
Solution:
- Sum the sales figures for each product over the four quarters.
- Compare the totals to find the product with the highest sales.
Question 2: Logical Reasoning
Problem: A sequence of letters follows a specific pattern. Identify the next letter in the sequence: A, C, F, J, ?
Solution:
- Observe the pattern: A (1), C (3), F (6), J (10)
- The differences between the positions are: 2, 3, 4
- The next difference should be 5, so the next letter is at position 10 + 5 = 15
- The 15th letter in the alphabet is O.
Verbal Ability
Question 1: Reading Comprehension
Problem: Read the passage and answer the question: What is the main argument of the author regarding renewable energy?
Solution:
- Carefully read the passage to identify the main points.
- Look for statements that summarize the author’s stance on renewable energy.
Question 2: Sentence Correction
Problem: Correct the following sentence: “The team, including its captain, were excited for the match.”
Solution:
- The subject “team” is singular, so the verb should also be singular.
- Correct sentence: “The team, including its captain, was excited for the match.”
The CAT 2018 exam was a comprehensive test of various skills, including quantitative ability, data interpretation, logical reasoning, and verbal ability. By understanding the solutions provided for Slot 1, aspirants can better prepare for future exams and improve their problem-solving skills.