ă. Find the 3 1 st term ofan AP whose l Ith term is 38 and the l

1.	ă. Find the 3 1 st term ofan AP whose l Ith term is 38 and the l 6th term is 73.
Answer» Given :a(11) = 38a(16) = 73Let first term be a and common difference be d.So,We know a(n) = a + (n-1) d 38 = a + 10d .....(1)73 = a + 15d ......(2) eq(2) - eq(1)35 = 5dd = 7So, a = 38 - 70 = -32Therefore,a(31) = a + 30d = -32 + 210 = 178 Good reply sister

ă. Find the 3 1 st term ofan AP whose l Ith term is 38 and the l 6th term is 73.

Answer»

Given :a(11) = 38a(16) = 73Let first term be a and common difference be d.So,We know a(n) = a + (n-1) d

38 = a + 10d .....(1)73 = a + 15d ......(2)

eq(2) - eq(1)35 = 5dd = 7So, a = 38 - 70 = -32Therefore,a(31) = a + 30d = -32 + 210 = 178

Good reply sister