Question

Find the 66th term in the following
arithmetic sequence :
-92, -85, -78, -71, .

Answer 1

363

Explanation

T1= a= -92

T2= -85

common difference d = T2-T1

d = -85 -(-92)

= -85 +92

= 7

Tn = a + (n-1)d

T66 = -92 + (66-1)7

= -92 + (65)7

= -92 + 455

= 363