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- Question
- What is the average height of the class?
I. Average height of the class decreases by 1 cm i we exclude the tallest person of class whose height is 56 cm.
II. Average height of the class increase by 1 cm if we exclude the shortest person o the class whose height is 42 cm.
Options- A. if the data in Statement I alone is sufficient to answer the question but the data in Statement II alone is not sufficient to answer the question.
- B. if the data in Statements II alone is sufficient to answer the question but the data in Statement I alone is not sufficient to answer the question.
- C. if the data in Statement I and II together are necessary to answer the question.
- D. if the data in Statement I and II together are not sufficient to answer the question.
- Correct Answer
- if the data in Statement I and II together are necessary to answer the question.
ExplanationLet x be the average height of the class and n be the number of students in the class.
Consider statements I alone
xn - 56 = (x + 1)(x -1)
? x + n = 57 .............(i)
Hence, the value of x cannot be found. So, I alone is not sufficient.
Consider statement I alone:
xn - 42 = (x + 1)(n - 1)
? x - n = 41 .............(ii)
Hence, the value of x cannot be found. So, II alone is not sufficient.
Both the statements together are suficient as the value of x can be found by solving (i) and (ii) - 1. Which company has sold the maximum number of units over the years?
Options- A. A
- B. C
- C. D
- D. E Discuss
- 2. In which of the following faculties the percentage increase in the number of students was minimum from 2008 to 2009?
Options- A. Science
- B. Commerce
- C. Arts
- D. Medicine Discuss
- 3. Which of the following pair of states have equal number of qualified male candidates?
Options- A. A and E
- B. B and F
- C. C and E
- D. C and G Discuss
- 4. Which of the following pair of states have equal number of qualified male candidates?
Options- A. A and E
- B. B and F
- C. C and E
- D. C and G Discuss
- 5. Amongst A, B, C, D,E and F, each are having a different height. Who is the shortest?
I. C is shorter than only B.
II. A is taller than only D and F.
Options- A. if the data in Statement I alone are sufficient to answer the question, while the data in Statement II alone are not sufficient to answer the question.
- B. if the data in Statements II alone are sufficient to answer the question, while the data in Statement I alone are not sufficient to answer the question.
- C. if the data in Statement I alone or in Statement II alone are sufficient to answer the question.
- D. if the data in both the Statement I and II are not sufficient to answer the question. Discuss
- 6. What is R's position from the left end in a row?
I. M is tenth from the left end of the row
II. there are sixteen children between M and R.
Options- A. if the data in Statement I alone are sufficient to answer the question, while the data in Statement II alone are not sufficient to answer the question.
- B. if the data in Statements II alone are sufficient to answer the question, while the data in Statement I alone are not sufficient to answer the question.
- C. if the data in Statement I alone or in Statement II alone are sufficient to answer the question.
- D. if the data in both the Statement I and II are not sufficient to answer the question. Discuss
- 7. How many sister dose k have?
I. M is sister of K.
II. k's mother has three children.
Options- A. if the data in statement I alone is sufficient to answer the question , while the data in statement II alone is not sufficient to answer the question.
- B. if the data either in statement I alone or in statement II alone is sufficient to answer the question
- C. if the data either in statement I alone or in statement II alone is sufficient to answer the question
- D. if the data in both the statement I and II together are not sufficient to answer the question. Discuss
- 8. ON which day of the month is definitely meena's birthday? If
I. Meena's brother correctly remembers that Meena'S birthday is after 25th but befor 29th of this month.
II. Meena's father correctly remembers that Meena's birthday is after 27th but before 31st of this month.
Options- A. if the data in statement I alone is sufficient to answer the question, while the data in Statement II alone is not sufficient to answer the question
- B. if the data in Statement II alone is sufficient to answer the question, while the data in Statement I alone is not sufficient to answer the question
- C. if the data in the Statements I and II together are not sufficient answer the question
- D. if the data in both the Statement I and II together are necessary to answer the question Discuss
- 9. Kiran is elder to Manoj and Dilip is elder to Neelam. Who is the youngest? If
I. Kiran is elder to Neelam.
II. Manoj is younger than dilip.
Options- A. if the data in statement I alone is sufficient to answer the question, while the data in Statement II alone is not sufficient to answer the question
- B. if the data in Statement II alone is sufficient to answer the question, while the data in Statement I alone is not sufficient to answer the question
- C. if the data in the Statements I and II together are not sufficient answer the question
- D. if the data in both the Statement I and II together are necessary to answer the question Discuss
- 10. In a certain code language, '146' means 'adopt good habits'. What is the code of 'habit' in that code language? If
I. '143' means 'like good pictures'.
II. '826' means 'passion becomes habit' .
Options- A. if the data in statement I alone is sufficient to answer the question, while the data in Statement II alone is not sufficient to answer the question
- B. if the data in Statement II alone is sufficient to answer the question, while the data in Statement I alone is not sufficient to answer the question
- C. if the data in the Statements I and II together are not sufficient answer the question
- D. if the data in both the Statement I and II together are necessary to answer the question Discuss
More questions
Correct Answer: A
Explanation:
Total number of units sold by company A over the years = 110 + 118 + 143 + 126 + 152 + 195 = 844
Total number of units sold by company C over the years =103 + 153 + 100 + 128 + 96 + 56 = 636
Total number of units sold by company D over the years = 112 + 166 + 78 + 83 + 135 + 198 = 772
Total number of units sold by company E over the years = 72 + 169 + 154 + 98 + 140 + 192 = 825
Hence, company A has sold the maximum number of units over the years.
Correct Answer: Medicine
Explanation:
In 2008, number of students in Science = Total Student in 2008 x 24%
In 2008, number of students in Science = 35000 x 24% = 35000 x 24/100 = 8400
In 2009, number of students in Science = Total Student in 2009 x 22%
In 2009, number of students in Science = 40000 x 22% = 40000 x 22/100 = 8800
Increase in number of students of Science = 8800 - 8400 = 400
Hence, Increase percentage = 400 x 100 /8400 = 400/84 = 4.7%
Similary
Increase in number of students of Commerce = 24x40000/100 - 22x35000/100 = 9600 - 7700 = 1900
Hence, their increase percentage = 1900x100 /7700 = 1900/77 = 24.67%
Increase in number of student of Arts = 11/100 x 40000 - 12/100 x 35000 = 4400 - 4200 = 200
Hence , their increase percentage = 200/4200 x 100 = 4.67
Increase in number of student of Medicine = 10/100 x 40000 - 11/100 x 35000 = 4000 - 3850 = 150
Hence, their increase percentage = 150/3850 x 100 = 3.89%
So, in Medicine the percentage increase in the number of student was minimum from 2008 to 2009
Correct Answer: C and G
Explanation:
Qualified Male Candidates from different states
A ? 4/9 x 49/100 x 15/100 x 300000 = 9800
B ? 6/10 x 61/100 x 18/100 x 300000 = 19764
C ? 3/5 x 45/100 x 23/100 x 300000 = 18630
E ? x 7/13 x 65/100 x 12/100 x 300000 = 12600
F ? 11/19 x 57/100 x 19/100 x 300000 = 18810
G ? 9/20 x 48/100 x 7/100 x 300000 = 4536
Hence, State C and G have equal number of qualified male candidates
Correct Answer: C and G
Explanation:
Qualified Male Candidates from different states
A ? 4/9 x 49/100 x 15/100 x 300000 = 9800
B ? 6/10 x 61/100 x 18/100 x 300000 = 19764
C ? 3/5 x 45/100 x 23/100 x 300000 = 18630
E ? x 7/13 x 65/100 x 12/100 x 300000 = 12600
F ? 11/19 x 57/100 x 19/100 x 300000 = 18810
G ? 9/20 x 48/100 x 7/100 x 300000 = 4536
Hence, State C and G have equal number of qualified male candidates
Correct Answer: if the data in both the Statement I and II are not sufficient to answer the question.
Explanation:
Statement I gives us the two tallest person.
Hence it is not sufficient.
From II either D or F is the shortest Hence II is also not sufficient.
Correct Answer:
Explanation:
From I and II R's position = 10 + 16 + 1 = 27th from left.
Correct Answer: if the data in both the statement I and II together are not sufficient to answer the question.
Explanation:
The data give in both the statement I and II together are not sufficient to answer the question.
Correct Answer: if the data in both the Statement I and II together are necessary to answer the question
Explanation:
I. Birthday according to the brother of Meena 26,27,28.
II. Birthday according to the father of Meena 28,29,30.
common date = 28
So, both the statement are necessary to answer the question.
Correct Answer: if the data in both the Statement I and II together are necessary to answer the question
Explanation:
Question cannot be answered even using both the statements. because either Manoj or Neelam is the youngest.
Correct Answer: if the data in Statement II alone is sufficient to answer the question, while the data in Statement I alone is not sufficient to answer the question
Explanation:
146 = adopt good habits. from statement II. it is clear that 6 and habits are common in question and Statement I. hence, 6 stands for habits, So the information in statement II alone is sufficient to answer the question .
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