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If (3,x,11,y,19) are five consecutive terms of an AP, what are (x,y) and the common difference?

Answer and explanation

Correct answer: (x=7,y=15,d=4)

There are (4) equal gaps between the first and fifth terms, so (d=\frac{19-3}{4}=4). In exams, divide the total difference between distant terms by the number of gaps.

Related tags

ApMissing TermsFive Consecutive TermsIntroduction To Aps And Common Difference.Introduction To Aps And Common DifferenceArithmetic Progressions (Ap)Arithmetic Progressions ApMathematics

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