MCQModerate2 marks
Select the correct option for each of the following questions.
The sum of the first 20 terms of the Arithmetic Progression 2, 4, 6, 8, ........... is
Topic: Arithmetic progression
Previous-year question practice database
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Pick an option and check your answer. The full worked answer is below either way.
Answer
Exam answer
(c) S₂₀ = 20/2[2(2) + 19(2)] = 10(42) = 420.
Explanation
Use Tₙ = a + (n−1)d or the appropriate Arithmetic Progression formula with the given terms.
In words
S₂₀ = 20/2[2(2) + 19(2)] = 10(42) = 420.