Question

Megha is sitting on which of the following chairs?

• A. $4$
• B. $5$
• C. $7$
• D. $8$

Answer 1

The correct option is C $7$

Form the question, we get that
- Sapna - - - - - - -
11 22 33 44 55 66 77 88 99 ..........(A)(A)
Given that
(i)(i) Megha, Sapna and Riya cannot sit at 11 or 99
(ii)(ii) Beena and Megha does not have anybody sitting adjacent to them.
(iii)(iii) There is only one empty chair between Megha and Riya.
(iv)(iv) Charu is adjacent to both Jiya and Riya. From (iv)(iv) it is very clear that Jiya -charu -Riya or Riya -charu -Jiya will be the
sitting arrangement .................(v)(v)
From (v)(v) and (iii)(iii), we get
Megha -Riya -Charu -Jiya ....(vi)(vi)
From (i)(i) and (ii)(ii), we conclude that Beena and Megha must have nobody adjacent to them. It means they must have at least one place empty adjustment to them. Now based on all the conditions (i),(ii),(iii),(iv),(v)(i),(ii),(iii),(iv),(v) and (vi)(vi), we get the only possible and valid arrangement as
1 2 3 4 5 6 7 8 9
X Sapna Jiya Charu Riya X Megha X Beena........(viii)(viii)
From (vi)(vi), we get megha will sit at chair number 77