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If the first term of a harmonic progression is 5 and the common difference of th

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Question: If the first term of a harmonic progression is 5 and the common difference of the corresponding arithmetic progression is 2, what is the second term?

Options:

  1. 2
  2. 3
  3. 4
  4. 6

Correct Answer: 6

Solution: 

The first term in the arithmetic progression is 1/5, and the common difference is 2. Therefore, the second term in the harmonic progression is 1/(1/5 + 2) = 1/(2.2) = 5/11.

If the first term of a harmonic progression is 5 and the common difference of th

Practice Questions

Q1
If the first term of a harmonic progression is 5 and the common difference of the corresponding arithmetic progression is 2, what is the second term?
  1. 2
  2. 3
  3. 4
  4. 6

Questions & Step-by-Step Solutions

If the first term of a harmonic progression is 5 and the common difference of the corresponding arithmetic progression is 2, what is the second term?
  • Step 1: Understand that a harmonic progression (HP) is related to an arithmetic progression (AP). The terms of an HP are the reciprocals of the terms of an AP.
  • Step 2: Identify the first term of the HP, which is given as 5. The first term of the corresponding AP is the reciprocal of this, so it is 1/5.
  • Step 3: Note that the common difference of the AP is given as 2.
  • Step 4: Calculate the second term of the AP. The second term is found by adding the common difference to the first term: (1/5) + 2.
  • Step 5: Convert 2 into a fraction with a denominator of 5 to add: 2 = 10/5. Now add: (1/5) + (10/5) = 11/5.
  • Step 6: The second term of the HP is the reciprocal of the second term of the AP. So, take the reciprocal of 11/5: 1/(11/5) = 5/11.
  • Harmonic Progression – A sequence of numbers where the reciprocals form an arithmetic progression.
  • Arithmetic Progression – A sequence of numbers in which the difference between consecutive terms is constant.
  • Reciprocal Relationships – Understanding how to manipulate and calculate terms based on their reciprocals.
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