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Saranya Rajendran

· started a discussion

· 1 Months ago

doubt (Question: 257693.0 )

please explain in brief about 51

Question:

In a row, Anu is the 12th person from the left end, Ali is the 18th person from the right end and Abhi is the 24th person from the left end. If Anu and Ali interchange their positions then Anu is 34th from the left end. How many persons are there between Ali and Anu at present?

Options:
A)

22            

B)

21            

C)

20            

D)

18

E)

17

Solution:

Ans: (b)

The given persons are arranged in the following way.

  

After interchanging their positions, we the following arrangement.

Therefore, there are 51 students in a row, in which there are 21 students between Ali and Anu.

Knowledge Expert

· commented

· 1 Months ago

Position of Ali+Abhi+Anu= 12+24+18=54
But we have to subtract the no of positions of Ali,Abhi and Anu (3)
So we have 24-3=51 as the total no of students in the row.
Regards Team TR

ARCHANA SONONE

· commented

· 1 Months ago

exctly
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