Question

pls find the attached answer

Answer 1

Answer:

Step-by-step explanation:

integers between 14 and 121 : 14, 15, 16,............,121

integers divisible by 4 : 16, 20, 24,..........,120

a = 16

d = 4

an = 120

n = ?

Sn = ?

an = a + (n-1)d

120 = 16 + (n-1)4

n = 27

Sn = n/2 (a + an)

    = 27/2 (16 + 120)

   = 1836