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If the nth term of an ap =6n-12 then find the common difference |
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Answer» Let n be 1 Sn = 6(1)- 12 = 6-12=-6 ( 1st term )Let n be 2 Sn = 6(2) - 12 = 12-12= 02nd term = sum of second tetm - sum of 1st term = 12- - 6= 12+6 = 18( 2nd term)So common difference = 18 -(-6)= 18 + 6 = 24 Nikal gaya thanks bhai Pehle n mein 1 daal fir 2 daal fir 2nd ap mein se 1st ap subtract krde nikal jaayega common difference 00000006 ..... Kaise nikala bhai -6 |
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