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Quantitative - Mathematics - Word Problems:

Basic Arithmetic Operations

MCQ - 377-13144

Question:

Consider the sequence 1, 2, 3, 1, 2, 3, 1, 2, 3,…….. What is the sum of the first 100 terms?

  1. 100
  2. 180
  3. 198
  4. 180
  5. 200

Correct Answer: D

Explanation:

The trio of “1, 2, 3”s will end at the 99th place, and the 100th place must be 1.

So, we have 33 groups of “1, 2, 3”, plus a “1” leftover. There are 33 groups because there are 99 digits in the series divided up into groups of 3 each. 99 ÷ 3 = 33, so there are 33 groups.

33 × (1 + 2 + 3) + 1. = 198 + 1 = 199

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1297 MCQ for effective preparation of the test of Basic Arithmetic Operations of Word Problems section.

Read the MCQ statement: Consider the sequence 1, 2, 3, 1, 2, 3, 1, 2, 3,…….. What is the sum of the first 100 terms?, keenly and apply the method you have learn through the video lessons for Basic Arithmetic Operations to give the answer. Record your answer and check its correct answer and video explanation for MCQ No. 377-13144.

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Solve the question for MCQ No. and decide which option (A through D/E) is the best choice to answer the MCQ, then click/tap the blue button to view the correct answer and it explanation.

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