Math, asked by sakthi46, 1 year ago

यदि किसी समांतर श्रेणी के तीसरे तथा सांतवे पद क्मशः 18 और 30 है तो श्रेणी प्राप्त करे​

Answers

Answered by Anonymous
3

Step-by-step explanation:

A(3) = 18

a + 2d = 18 -------(1)

A(7) = 30

a + 6d = 30 -------(2)

equation (2) - (1) से

4d = 12

d = 3

equation (1) से

a + 6 = 18

a = 12

श्रेणी a , a+d , a+2d ,..........

12,15,18,21,24,27,30

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