Question

Write suumm of the first 30 tems of the as 37,48,59.......

Answer 1

Given :

• First term ( a ) = 37

• Common difference ( d ) = 11

• Number of terms ( n ) = 30

To Find :

• Sum of first 30 terms

Solution :

★ Sn = n/2 [ 2a + ( n - 1 ) d ★

→ S₃₀ = 30/2 [ 2 × 37 + ( 30 - 1 ) 11

→ S₃₀ = 15 [ 74 + 319 ]

→ S₃₀ = 15 × 393

→ S₃₀ = 5895

Sum of first 30 terms is 5895