Aspire Faculty ID #16247 · Topic: NIMCET 2011 · Just now
NIMCET 2011

If F is to present immediately after D presents his paper, C could be scheduled for which of the following places?

Solution

Given:
D F must be consecutive pair.
Also given earlier: B C must be consecutive pair.

D must be 1st or 6th.

Case 1: D = 1 → F = 2
Remaining positions: 3, 4, 5, 6
B C must be consecutive → possible: (3–4), (4–5), (5–6)
So C could be: 4, 5, 6

Case 2: D = 6 → F does not exist (no 7th slot) → Impossible
So only Case 1 valid.

From possible C = {4, 5, 6} but max position = 6.

Check options: 2, 3, 4, 5
Possible = 4, 5

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