Bihar board class 10th math exercise 5.3 question 3(vii) in hindi
Ncert class 10th math exercise 5.3 Q3(vii) in hindi
3(ii) рдПрдХ A.P рдоें , a=8 рдФрд░ an =62 рдФрд░ Sn=210 рджिрдпा рд╣ै। n рдФрд░ d рдЬ्рдЮाрдд рдХीрдЬिрдП।
рд╣рд▓ : рджिрдпा рдЧрдпा рд╣ै рдХि a=8 рдФрд░ an=62 рдФрд░ Sn=210 рд╣ै।
рдЪूँрдХि Sn=210
рдЗрд╕ीрд▓िрдП, (n/2)[a+an]=210
⇒(n/2)[8+62]=210
⇒ n[8+62]=210×2
⇒ n×70=210×2
⇒ n=(210×2)/70
⇒ n=3×2
⇒ n=6
рдпрд╣ाँ an=62
рдпा a6=62
⇒a+5d=62
⇒8+5d=62
⇒5d=62-8
⇒5d=54
⇒d=(54/5)
рдЕрддः n=6 рдФрд░ d=(54/5) рд╣ै।
Class math exercise 5.3 Q.3(ii) in hindi⇒click here
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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(viii) in hindi⇒click here
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class 10th math exercise 5.3 question 3(x) in hindi- click here
