Question

In a row of 54 students facing North, Karma is 12th from the left end. If Namgyal is 21st to the right of Karma, what is Namgyal's position from the right end of the line?

• A. 21st
• B. 24th
• C. 23rd
• D. 22nd

Answer 1

Answer:

D. 22nd

Namgyal's position from the right end of the line is 22nd.

• Find Karma's position from the left: Karma is 12th from the left end.

• Find Namgyal's position from the left: Namgyal is 21 positions to the right of Karma, so his position from the left is:
  $12+21=\mathbf{33rd}$

• Calculate Namgyal's position from the right: Use the standard ranking formula:
  $\text{Position\ from\ Right}=(\text{Total\ Students}-\text{Position\ from\ Left})+1$

• $\text{Position\ from\ Right}=(54-33)+1=21+1=\mathbf{22nd}$