snehasomasundaran snehasomasundaran

05-01-2020
Mathematics

contestada

find the sum of first 51term of an AP whose second and third term are 14 and 18 respectively

Respuesta :

devishri1977 devishri1977

05-01-2020

Answer:

Step-by-step explanation:

a₂ = 14

a₃ = 18

d = a₃ -a₂ = 18 - 14 = 4

a₁ = 14 - 4 = 10

nth term = a + (n-1)d

a₅₁ = 10 + 50 * 4

= 10 + 200

= 210

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