NIELIT Scientific Assistant A 2020 November: 34

Question

Choose the alternative to decide whether the data given in the statements is/are sufficient to answer the question based on the following information.

Five persons $\text{A, B, C, D, and E }$ are sitting in a row. Who is sitting in the middle?

$\text{Statements}$:

1. E is to the left of B.
2. B is in-between C and E.
3. D is in-between E and A.

Choose which of the following will be sufficient to find out who is sitting in the middle?

• A. Only (I) and (II)
• B. Only (II) and (III)
• C. Only (I) and (III)
• D. All (I), (II) and (III)

Answer 1

OPTION(D)

from (l) the order is E B

from  (ll) the order is  E B C

from (lll) the order is A D E B C

so, all 3 options are required to get clear picture of who is sitting in middle. :)

Answer 2

When you draw the arrangement, there will be 2 possible sitting arrangements
ADEBC, EDABC and to find the middle person in both the arrangements we require all the 3 statements.