किसी समांतर श्रेढ़ी में (a=17), (d=1) है। (40)वाँ पद क्या है?
In an AP, (a=17), (d=1). What is the (40)th term?
Explanation opens after your attempt
C. (56)
Concept
\(a_{40}=17+39\times1=56\). When (d=1), (n-1) is directly added to the first term.
Why this answer is correct
The correct answer is C. (56). \(a_{40}=17+39\times1=56\). When (d=1), (n-1) is directly added to the first term.
Exam Tip
\(a_{40}=17+39\times1=56\)। जब (d=1) हो, तो (n-1) सीधे प्रथम पद में जुड़ता है।
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