Common difference

What is the common difference of an AP (arithmetic progression) in which a₁₈ – a₁₄ = 32

Correct answer:

d =  8

Step-by-step explanation:

a18 = a1+17d a14 = a1+13d  a18a14 = 32 a1+17d(a1+13d) = 32  17d13d = 32  d=171332=8



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