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pankaj kumar

· started a discussion

· 1 Months ago

WRON ANSWER (Question: 43088.0 )

THEY CAN SIT IN TWO WAY............
1 2 3 4 5 6 7 8 9 10 11 12 13 P 15 16 17 18 Q 20 21 22 23 24 25
OR
1 2 3 4 5 6 7 8 Q 10 11 12 13 P

Question:
Some boys are sitting in a row. P is sitting 14th from the left and Q is 7th from the right. If there are 4 boys between P and Q. How many maximum number of boys can be there in the row ?
Options:
A) 25
B) 23
C) 21
D) 19
E) 50
Solution:
No. of boys in the row = No. of boys upto P + No. of boys between P and Q + No. of boys including Q and those behind

= 14+4+7 = 25

Knowledge Expert

· commented

· 1 Months ago

There can be two ways of seating:

First, 1 2 3 4 5 6 7 8 9 10 11 12 13 (14P) 15 16 17 18 (19Q) 20 21 22 23 24 25

Second, 1 2 3 4 5 6 7 8 (9Q) 10 11 12 13 (14P) 15 - the overlapping condition.

With given option(a)-25 is right, if option(e) had Can\'t be determined then we will go through option(e).
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