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zero_last MCQ Questions for Class 10
zero_last se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.
2 MCQs
Class 10 • zero_last
Practice Questions
2 questions tagged with zero_last.
यदि समांतर श्रेणी का पहला पद (85), अंतिम पद (0) और पदों की संख्या (18) है, तो योग कितना है?
If the first term of an arithmetic progression is (85), the last term is (0), and the number of terms is (18), what is the sum?
#first_last
#zero_last
#ap_sum
A (745)
B (765)
C (785)
D (805)
Explanation opens after your attempt
Step 1
Concept
(S_{18}=\frac{18}{2}(85+0)=765). The formula remains the same even when the last term is zero.
Step 2
Why this answer is correct
The correct answer is B. (765). (S_{18}=\frac{18}{2}(85+0)=765). The formula remains the same even when the last term is zero.
Step 3
Exam Tip
(S_{18}=\frac{18}{2}(85+0)=765)। अंतिम पद शून्य हो तब भी सूत्र वही रहता है।
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समांतर श्रेणी \(96,88,80,\ldots\) के पहले (13) पदों का योग कितना होगा?
What will be the sum of the first (13) terms of the arithmetic progression \(96,88,80,\ldots\)?
#decreasing_ap
#zero_last
#ap_sum
A (614)
B (624)
C (634)
D (644)
Explanation opens after your attempt
Step 1
Concept
The thirteenth term is (0), so (S_{13}=\frac{13}{2}(96+0)=624). In a decreasing progression, the last term can also be zero.
Step 2
Why this answer is correct
The correct answer is B. (624). The thirteenth term is (0), so (S_{13}=\frac{13}{2}(96+0)=624). In a decreasing progression, the last term can also be zero.
Step 3
Exam Tip
तेरहवाँ पद (0) है, इसलिए (S_{13}=\frac{13}{2}(96+0)=624)। घटती श्रेणी में अंतिम पद शून्य भी हो सकता है।
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