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In an a.p if the common …

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In an a.p if the common difference is -4 and the 7th term is 4 then find the first term

Posted by Nishina Hashim E 6 years, 3 months ago

CBSE > Class 10 > Mathematics

3 answers

Ramchaura 2 Sarojninagar 6 years, 3 months ago

d=-4 7th =a+6d a+6d=4 a+6(-4)=4 a-24=4 a=28

Vinamra Khare 6 years, 3 months ago

a=28

Aamira Manowar 6 years, 3 months ago

T7=a +6d =4 =a+6.-4=4 =a-24=4 a=28

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