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In an ap the common difference d and seventh term a7 is 4 then find the first term .

Posted by Chirag Kalra 7 years, 9 months ago

CBSE > Class 10 > Mathematics

2 answers

Chandrashekhar Wankhede 7 years, 9 months ago

a7 = d = 4, a7 = a + 6d = 4, substituting d = 4 again in equation a +6d = 4, we get a = 4 - 24, that is a = -20

1Thank You

Sid Dadhich 7 years, 9 months ago

4=a+6d

0Thank You

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Posted by Kanika . 1 month, 1 week ago

CBSE > Class 10 > Mathematics