Class 10 math chapter 5 exercise 5.3 question 3(i) in hindi
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Class 10 math chapter 5 exercise 5.3 question 3(i) in hindi

Arithmetic progression Question Solution

class 10 maths exercise 5.3 solutions in hindi

NCERT Class 10th Math Chapter 5 Ex-5.3 question 3(i) in hindi

प्रश्‍न 3.एक A.P. में(i) a = 5, d =3 और an = 50 दिया है । n और Sn ज्ञात कीजिए ।

हल:- दिया गया है कि a = 5, d =3 और an = 50 

प्रश्नानुसार, 

an = 50 

चूँकि हम जानते हैं कि an= a+(n-1)d

इसीलिए,a+(n-1)d=50

⇒5+(n-1)3=50

⇒5+(n-1)3=50

⇒(n-1)3=50-5

⇒(n-1)3=45

⇒(n-1)=(45/3) 

⇒(n-1)=15

⇒n=15+1

या n=16

इसलिए, Sn=(n/2) [a+an]

अर्थात, S16=(16/2) [5+50]

=8×45

=240

अतः उस AP के n=16 और Sn=240 है।

Class math exercise 5.3 Q.3(ii) in hindi⇒click here 

Class math exercise 5.3 Q.3(iii) in hindi⇒click here 

Class math exercise 5.3 Q.3(iv) in hindi⇒click here  

Class math exercise 5.3 Q.3(v) in hindi⇒click here 

Class math exercise 5.3 Q.3(vi) in hindi⇒click here  

Class math exercise 5.3 Q.3(vii) in hindi⇒click here 

Class math exercise 5.3 Q.3(viii) in hindi⇒click here 

 class 10th math exercise 5.3 question 3(ix) in hindi- click here 

कक्षा 10 गणित अध्याय 5 अंकगणितीय प्रगति उदाहरण 5.3 के लिए एनसीईआरटी समाधान

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