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IBM Numerical Ability - Data Sufficiency Interview Questions with Answers

(#M40005582) IBM QUESTION Average Keep an EYE

How many marks did Tarun secure in English?
I.The average mark obtained by Tarun in four subjects including English is 60.
II.The total marks obtained by him in English and Mathematics together are 170.
III.The total marks obtained by him in Mathematics and Science together are 180.

A. I and II only B. II and III only
C. I and III only D. All I, II and III
E. None of these

Asked In IBM (13 years ago)

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(#M40005581) IBM QUESTION Average Keep an EYE

How many candidates were interviewed everyday by the panel A out of the three panels A, B and C?
I.The three panels on average interview 15 candidates every day.
II.Out of a total of 45 candidates interviewed everyday by the three panels, the number of candidates interviewed by panel A is more by 2 than the candidates interviewed by panel c and is more by 1 than the candidates interviewed by panel B.

A. I alone sufficient while II alone not sufficient to answer B. II alone sufficient while I alone not sufficient to answer
C. Either I or II alone sufficient to answer D. Both I and II are not sufficient to answer
E. Both I and II are necessary to answer

Asked In IBM (13 years ago)

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(#M40005542) IBM QUESTION problems on ages Keep an EYE

Average age of employees working in a department is 30 years. In the next year, ten workers will retire. What will be the average age in the next year?
I. Retirement age is 60 years.
II.There are 50 employees in the department.

A. I alone sufficient while II alone not sufficient to answer
B. II alone sufficient while I alone not sufficient to answer
C. Either I or II alone sufficient to answer
D. Both I and II are not sufficient to answer
E. Both I and II are necessary to answer

Solution

Let total number of employees = x
so total age = 30x
in the next year total age = 31x
let the age of retirement = y
so new avg = (31x-10y)/(x-10)
for finding new avg x and y both are required

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Asked In IBM (13 years ago)

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(#M40005541) IBM QUESTION problems on ages Keep an EYE

What is the present age of Tanya?
I.The ratio between the present ages of Tanya and her brother Rahul is 3 : 4 respectively.
II.After 5 years the ratio between the ages of Tanya and Rahul will be 4 : 5.
III.Rahul is 5 years older than Tanya.

A. I and II only
B. II and III only
C. I and III only
D. All I, II and III
E. Any two of the three
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Asked In IBM (13 years ago)

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(#M40005540) IBM QUESTION problems on ages Keep an EYE

What is Ravi's present age?
I.The present age of Ravi is half of that of his father.
II.After 5 years, the ratio of Ravi's age to that of his father's age will be 6 : 11.
III.Ravi is 5 years younger than his brother.

A. I and II only
B. II and III only
C. I and III only
D. All I, II and III
E. Even with all the three statements answer cannot be determined.

Asked In IBM (13 years ago)

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(#M40005539) IBM QUESTION problems on ages Keep an EYE

What will be the ratio between ages of Sam and Albert after 5 years?
I.Sam's present age is more than Albert's present age by 4 years.
II.Albert's present age is 20 years.
III.The ratio of Albert's present age to Sam's present age is 5 : 6.

A. Any two of I, II and III
B. II only
C. III only
D. I or III only
E. II or III only

Asked In IBM (13 years ago)

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(#M40005538) IBM QUESTION problems on ages Keep an EYE

What is the difference between the present ages of Ayush and Deepak?
I. The ratio between Ayush's present age and his age after 8 years 4:5.
II.The ratio between the present ages of Ayush and Deepak is 4 : 3.
III.The ratio between Deepak's present age and his age four years ago is 6 : 5.

A. Any two of I, II and III
B. I or III only
C. Any one of the three
D. All I, II and III are required
E. Even with all I, II and III, the answer cannot be obtained.

Asked In IBM (13 years ago)

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