Question

(iii) First term of an AP is 2 and the sum of all terms is 30450, No of terms is 174. Then last
term is
(a) 342
(b) 346
(0)350
(0) 172​

Answer 1

Step-by-step explanation:

its answer is 348 you didn't write 348 in option

Answer 2

Answer:

348

Step-by-step explanation:

a=2

S174=30450

Sn= n/2 (2a+(n-1)d)

S174 = 174/2 (2×2+(174-1)d)

30450= 87 (4 + 173d)

30450/87 = 4+173d

350 = 4+173d

173d = 350-4

173d = 346

d = 346/173

d = 2

T174 = a+(n-1) d

= 2+(174-1)2

= 2+173×2

= 2+346

= 348

Last term = 348