If Anand Kumar finds that he is fourteenth from the left end and 7 from the…
2024
If Anand Kumar finds that he is fourteenth from the left end and 7 from the right end, then how many boys must be added to the line such that there are 30 boys in the line?
Answer: D. 10 — Answer: 10 Key idea: total number of boys = position from left + position from right - 1. Compute the current total: 14 (from left) + 7 (from right) - 1 = 20.…
- A.
12
- B.
14
- C.
8
- D.
10
Attempted by 9 students.
Show answer & explanation
Correct answer: D
Answer: 10
Key idea: total number of boys = position from left + position from right - 1.
Compute the current total: 14 (from left) + 7 (from right) - 1 = 20.
Find how many to add to reach 30: 30 - 20 = 10.
Therefore, 10 more boys must be added.
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