यदि किसी समांतर श्रेणी के तीसरे तथा सांतवे पद क्मशः 18 और 30 है तो श्रेणी प्राप्त करे
Answers
Answered by
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
Similar questions
Music,
5 months ago
Social Sciences,
5 months ago
Math,
11 months ago
English,
11 months ago
Math,
1 year ago