Exercise: Data Sufficiency

Questions for: Data Sufficiency

Question: In a row of five children A, B, C, D and E, who is standing in the middle ?

Statements:

  1. D is to the immediate right of E and B is to the immediate left of E.
  2. B is at the extreme left of the, row.

A:
I alone is sufficient while II alone is not sufficient
B:
II alone is sufficient while I alone is not sufficient
C:
Either I or II is sufficient
D:
Neither I nor II is sufficient
Answer: E

From I, we have the order: B, E, D.

From II, B is at the extreme left of the row.

Thus, considering both I and II, we conclude that among the five children, D is the third and hence the middle child in the row.

Question: What is the code for 'mangoes' in the code language ?

Statements:

  1. In that code language, 'Te Le Pa Na' means 'You eat many mangoes' and 'Le Na Da' means 'You sell mangoes'.
  2. In the code language, 'Ge Na Se La Le' means 'They eat bananas and mangoes' and 'Ne De Le La' means 'Who others eat bananas'.

A:
I alone is sufficient while II alone is not sufficient
B:
II alone is sufficient while I alone is not sufficient
C:
Either I or II is sufficient
D:
Neither I nor II is sufficient
Answer: E

In 'You eat many mangoes' and 'Who others eat bananas', the common word is 'eat' and the common code word is 'Le'. So, 'Le' means 'eat'.

In 'You eat many mangoes' and 'They eat bananas and mangoes', the common code word 'Le' stands for 'eat'. So, the other common code word 'Na' stands for the other common word i.e. 'mangoes'.

Question: In a certain code, 'nop al ed' means They like flowers'. Which code word means 'flowers' ?

Statements:

  1. 'id nim nop' means 'They are innocent'.
  2. 'gob ots al' means 'We like roses'.

A:
I alone is sufficient while II alone is not sufficient
B:
II alone is sufficient while I alone is not sufficient
C:
Either I or II is sufficient
D:
Neither I nor II is sufficient
Answer: E

In the given statement and I, the common word is 'They' and the common code word is 'nop'. So, 'nop' is the code for 'They'.

In the given statement and II, the common word is 'like' and the common code word is 'al'. So, 'al' is the code for 'like'.

Thus, in the given statement, 'ed' is the code for 'flowers'.

Question: What is Sumit's position from the right end in a row of children?

Statements:

  1. There are 10 children between Sumit and Rajan.
  2. Rajan is twentieth from the left end of the row of children.

A:
I alone is sufficient while II alone is not sufficient
B:
II alone is sufficient while I alone is not sufficient
C:
Either I or II is sufficient
D:
Neither I nor II is sufficient
Answer: D

Clearly, neither the number of children in the row is given nor the position of Sumit relative to Rajan is mentioned in any one of I or II.

Question: In a certain code language, '297' means 'tie clip button'. Which number means 'button' in that language ?

Statements:

  1. In that language, '926' means clip your tie'.
  2. In that language, '175' means 'hole and button'.

A:
I alone is sufficient while II alone is not sufficient
B:
II alone is sufficient while I alone is not sufficient
C:
Either I or II is sufficient
D:
Neither I nor II is sufficient
Answer: C

In given statement and I, the common words are 'tie' and 'clip' and the common codes are '2' and '9'. So, '2' and '9' are the codes for 'tie' and 'clip'. Thus, in the given statement, '7' means 'button'. In given statement and II, the common code word '7' represents the common word 'button'.

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