A person is to count 4500 currency notes. Let an denote the number of notes he counts in the nth minute. If a1 = a2 = .... = a10 = 150 and a10, a11 .... are in an AP with common diferencec andndash;2, then the time taken by him to count all notes is -[AIEEE 2010]a)24 minutesb)34 minutesc)125 minutesd)135 minutesCorrect answer is option 'B'. Can you explain this answer?

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A person is to count 4500 currency notes. Let an denote the number of notes he counts in the nth minute. If a₁ = a₂ = .... = a₁₀ = 150 and a₁₀, a₁₁ .... are in an AP with common diferencec –2, then the time taken by him to count all notes is -

[AIEEE 2010]

a)
24 minutes
b)
34 minutes
c)
125 minutes
d)
135 minutes

Correct answer is option 'B'. Can you explain this answer?

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A person is to count 4500 currency notes. Let an denote the number of ...

Number of notes that the person counts in 10 min
= 10 × 150 = 1500
Since, a₁₀, a₁₁, a₁₂, ..... are in AP with common difference –2.
⇒ Let n be the time taken to count remaining 3000 notes, then

⇒ n² - 149n + 3000 = 0
⇒ (n - 24) (n - 125) = 0
⇒ n = 24, 125
The, the total time taken by the person to count all notes
= 10 + 24 = 34 min.

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A person is to count 4500 currency notes. Let an denote the number of notes he counts in the nth minute. If a1 = a2 = .... = a10 = 150 and a10, a11 .... are in an AP with common diferencec –2, then the time taken by him to count all notes is -[AIEEE 2010]a)24 minutesb)34 minutesc)125 minutesd)135 minutesCorrect answer is option 'B'. Can you explain this answer?

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A person is to count 4500 currency notes. Let an denote the number of notes he counts in the nth minute. If a1 = a2 = .... = a10 = 150 and a10, a11 .... are in an AP with common diferencec –2, then the time taken by him to count all notes is -[AIEEE 2010]a)24 minutesb)34 minutesc)125 minutesd)135 minutesCorrect answer is option 'B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about A person is to count 4500 currency notes. Let an denote the number of notes he counts in the nth minute. If a1 = a2 = .... = a10 = 150 and a10, a11 .... are in an AP with common diferencec –2, then the time taken by him to count all notes is -[AIEEE 2010]a)24 minutesb)34 minutesc)125 minutesd)135 minutesCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A person is to count 4500 currency notes. Let an denote the number of notes he counts in the nth minute. If a1 = a2 = .... = a10 = 150 and a10, a11 .... are in an AP with common diferencec –2, then the time taken by him to count all notes is -[AIEEE 2010]a)24 minutesb)34 minutesc)125 minutesd)135 minutesCorrect answer is option 'B'. Can you explain this answer?.

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