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double-minus-one MCQ Questions for Class 9

double-minus-one se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

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2 questions tagged with double-minus-one.

Question 1/2 Easy Mathematics Sequences and Progressions Recursive rule Class 9 Level 47

यदि \(a_1=5\) और \(a_{n+1}=2a_n-1\) है तो \(a_3\) का मान क्या है?

If \(a_1=5\) and \(a_{n+1}=2a_n-1\), what is the value of \(a_3\)?

Explanation opens after your attempt
Correct Answer

B. (17)

Step 1

Concept

The terms are (5,9,17), so \(a_3=17\). Exam tip: do the subtraction at the end.

Step 2

Why this answer is correct

The correct answer is B. (17). The terms are (5,9,17), so \(a_3=17\). Exam tip: do the subtraction at the end.

Step 3

Exam Tip

पद (5,9,17) हैं इसलिए \(a_3=17\) है। नियम में घटाव अंत में करें।

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Question 2/2 Expert Mathematics Sequences and Progressions Sequences Class 9 Level 43

अनुक्रम \(2,3,5,9,17,33,\ldots\) में हर अगला पद पिछले पद का दोगुना घटाकर (1) है। अगला पद क्या होगा?

In the sequence \(2,3,5,9,17,33,\ldots\), each next term is double the previous term minus (1). What will be the next term?

Explanation opens after your attempt
Correct Answer

C. (65)

Step 1

Concept

\(2\times33-1=65\). Exam tip: do not change the order of multiplication and subtraction in recurrence rules.

Step 2

Why this answer is correct

The correct answer is C. (65). \(2\times33-1=65\). Exam tip: do not change the order of multiplication and subtraction in recurrence rules.

Step 3

Exam Tip

\(2\times33-1=65\) है। पुनरावर्ती नियम में गुणा और घटाव का क्रम न बदलें।

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