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Subjects
Class 10MathematicsArithmetic Progressions (AP)Word problems based on APsMedium
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A student writes (5) contact numbers on the first day and (7) more numbers each next day. How many numbers will he write on the (15)th day?

Answer and explanation

Correct answer: (103)

The numbers form the AP (5,12,19,\ldots) and (a_{15}=103). Exam tip: work done on the (n)th day is the (n)th term.

Related tags

ApWord-ProblemContactsWord Problems Based On ApsArithmetic Progressions (Ap)Arithmetic Progressions ApMathematicsClass 10 Mcq
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