Class 9 Mathematics - Sequences and Progressions - Arithmetic Progression Expert Quiz

Mathematics Sequences and Progressions Arithmetic Progression Expert Class 9 Level 42

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Question 1/1 Expert Mathematics Sequences and Progressions Sequences Class 9 Level 42

अनुक्रम \(75,68,61,54,\ldots\) में कितने पद धनात्मक हैं?

In the sequence \(75,68,61,54,\ldots\), how many terms are positive?

Explanation opens after your attempt
Correct Answer

B. (11)

Step 1

Concept

From (75-7(n-1)>0), \(n<\frac{82}{7}\). So (11) terms are positive.

Step 2

Why this answer is correct

The correct answer is B. (11). From (75-7(n-1)>0), \(n<\frac{82}{7}\). So (11) terms are positive.

Step 3

Exam Tip

(75-7(n-1)>0) से \(n<\frac{82}{7}\) मिलता है। इसलिए (11) पद धनात्मक हैं।

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