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The 7th term of an AP is 4 and its common difference is –4. What is its first term? (a) 16 (b) 20 (0) 24 (d) 28

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Question

The 7th term of an AP is 4 and its common difference is –4. What is its first term?

Options

  • 16

  • 20

  • 24

  • 28

MCQ
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Solution

28

Explanation:

a + 6d = 4

⇒ a + 6 × (–4) = 4

⇒ a = 28

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Chapter 5: Arithmetic Progression - MULTIPLE-CHOICE QUESTIONS (MCQ) [Page 298]

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R.S. Aggarwal Mathematics [English] Class 10
Chapter 5 Arithmetic Progression
MULTIPLE-CHOICE QUESTIONS (MCQ) | Q 30. | Page 298
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