data sufficiency all data sufficiency questions and answers - skillgun
What is Amsa's rank in the class? I. There are 30 students in the class. II. There are 29 students who have scored less than Amsa.
From I and II we conclude that there are 29 students below Amsa in rank.
Thus, Amsa is 1st rank in the class. So, both the statements are necessary.
Who is the father of Sathish?
I. P and Q are brothers.
II. Q's wife is sister of Sathish's wife
From II we conclude that Q is the brother-in-law of Sathish.
So, even from both the statements, we can't find out who is the father of Sathish.
What day is the fifteenth of a given month?
I. The last day of the month is Wednesday.
II. The third Sunday of the month was eighteenth.
Statement II reveals that 18th was Sunday and therefore, 15th was Thursday.
So, only statement II is needed.
Avanthika, Bindu, Charmi, and Damayanthi are 4 sisters.
i. Avanthika is heavier than Bindu, and Bindu is heavier than Damayanthi.
ii. Bindu is lighter than Charmi.
Who is the lightest?
From first statement, we have Avanthika > Bindu > Damayanthi.
From second statement, we have Charmi > Bindu.
Combining (i) and (ii), we can conclude that Damayanthi is the heaviest.
So, both the statements are needed.
It is 8.00 p.m., when can Hamse get next bus for villapuram from mahal?
I. Buses for villapuram leave after 30 minutes, till 10 p.m.
II. Fifteen minutes ago, one bus has left for villapuram.
II reveals that previous bus had left at 7.45 p.m.
As given in I, the next bus would leave after 30 minutes.
In a certain code '24' means 'stop smoking' and '60' means 'injurious habit'. What is the meaning of '0' and '6' respectively in that code? I. '268' means 'stop bad habit'. II. '940' means 'smoking is injurious'.
60' means 'injurious habit' and '268' means 'stop bad habit'.
Thus the common code number '6' stands fro common word 'habit'.
So, '0' represents 'injurious'. Hence I is sufficient.
Also '60' means 'injurious habit' and '940' means 'smoking is injurious'. thus, the common code number '0' stands for common word 'injurious'.
so, '6' represents 'habit'.
Thus II is also sufficient.
When is Amsa birthday this year?
I. It is between April 2 and 4, April 2 being Wednesday.
II. It is not on Friday.
From statement I, we conclude that Amsa's birthday is on April 3, which is Thursday, this year.
So, only I is needed.
On which day the flat was purchased by Amsa in 1996? I. Certainly before 18th December, 1996 but definitely not before 15th December, 1996. II. Certainly after 16th December, 1996 but not later than 19th December, 1996.
From statement I, we conclude that Amsa purchased the flat between 15th and 18th December.
From statement II we conclude that the flat was purchased between 16th and 19th December.
The day common to above two groups is 17th December.
So, Amsa purchased the flat on 17th December.
Thus both I and II are needed.
Is Amsa taller than Sandy? I. Dinesh is of the same height as Amsa and Sandy.
I. Deepika is of the same height as Amsa and Sandy.
II. Sachin is not shorter than Deepika.
From statement I, we can conclude that Deepika, Amsa and Sandy are of the same height.
Amsa is not taller than Sandy.
Thus only statement I is sufficient to answer the question.
Buses are always punctual in city X. How long, at the most, will Ms. Amsa have to wait for the bus?
I. Ms. Amsa has come to the bus stand at 9 A.M.
II. There is a bus at 10 A.M. and possibly another bus even earlier.
From both the given statements, we find that Ms. Amsa reached the bus stand at 9 A.M. and a bus is sure to arrive at 10 A.M.
So, Ms. Amsa has to wait for at the most one hour.
The president of a reputed company visits one department on Monday of every week except for the Monday of third week of every month. When did he visit the Purchase department ?
I. He visited Accounts department in the second week of September after having Purchase department on the earlier occasion.
II. He had visited Purchase department immediately after visiting Stores department but before visiting Accounts department.
From statement I, we can conclude that the president visited purchase department on Monday of the first week of September.
So, I alone is sufficient.
The time of visit of no department is mentioned in II, which is, therefore, insufficient.
How Ramesh is related to Pavan?
I. Naresh is the brother of Pavan.
II. Naresh is Ramesh's son.
From both the statements together, we find that Ramesh is the father of Naresh and Naresh is the brother of Pavan.
So, Ramesh is the father of Pavan.
Thus both the given statements are needed.
Sathish ranks eighth in a class. What is his rank from the last?
I. There are 47 students in the class
II. Amsa who ranks 10th in the same class, ranks 38th from the last.
To find the rank from other end, we need to know the total number of student in the class, so I is sufficient.
Also from II we can conclude that there are 47 students in the class.
So II is also sufficient.
How many brothers does Varun have?
I. Varun's father has three children.
II. Varun has two sisters.
From both the statements together, we find that Varun's father has three children.
Varun and his two sisters.
This mean that Varun has no brother.
So both I and II are needed.
Roni, Kate, Tani and Susi are friends. Who is oldest among them?
I. The total age of kate and tani together is more than that of susi.
II. The total age of roni and kate together is less than that of susi.
From given statements, we find that: K+T>S and R+K<S.
Thus who is oldest is not known.
How many coins were sold this year?
I. We sold 500 coins last year.
II.This time we sold 1.5 times of the coins sold in the last year.
From both the given statements, we find that the number of coins sold this year is 750.
So both I and II required.
In a certain code language, '308' means 'tie clip button'. Which number means 'button'?
I. In that language '037' means 'clip your tie'.
II. In that language '286' means 'hole and button'.
Comparing the information in the question with statement I, we find that '3' and '0' are the codes for 'tie' and 'clip'. So, '8' represents 'button'. Thus, I alone is sufficient.
Again, comparing the information in the question with II, we find that the common code number '8' stands for the common word 'button'.
Thus II alone is sufficient.
How is Ching related to Pushpa?
I. Pushpa is Ching's sister.
II. Rohith is the father of Pushpa and Ching.
From statements I and II together, we can conclude only that either Ching is the sister or brother of Pushpa.
So even from both the statements the exact relation cannot be known. We don't the gender of Ching exactly.
Amsa, Priya, Nita and Sandy who is the heaviest?
I. Amsa and Priya are of the same weight.
II. Priya weighs more than Nita, but less than Sandy.
From I, we have: A=P. From II, we have : N<P<S.
Combining the above two, we have: N<A=P<S.
Sandy is the heaviest.
So both I and II are required.
Four persons Pavan, Qureshi, Ramesh, and Satish are playing cards game.
I. Satish and Pavan are sitting opposite to each other.
II. Pavan is sitting left side of Qureshi and Qureshi is left of Satish.
Who is the partner of Ramesh?
Clearly, each of the given statements shows that Qureshi is sitting opposite to Ramesh or Qureshi is the partner of Ramesh.
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