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Letter and Symbol Series - Aptitude Questions and Answers - RejinpaulPlacement




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In these series, you will be looking at both the letter pattern and the number pattern. Fill the blank in the middle of the series or end of the series.

1.
DEF, DEF2, DE2F2, _____, D2E2F3
Answer & Solution
Answer: (D) 429

Solution: 8 x 1 - 2 = 6
6 x 2 - 3 = 9
9 x 3 - 4 = 23
23 x 4 - 5 = 87
87 x 5 - 6 = 429 ...
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2.
Look at this series: 5.2, 4.8, 4.4, 4, ... What number should come next?
Answer & Solution
Answer: (D) 3.6

Solution: In this simple subtraction series, each number decreases by 0.4.
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3.
Look at this series: 2, 6, 18, 54, ... What number should come next?
Answer & Solution
Answer: (C) 162

Solution: This is a simple multiplication series. Each number is 3 times more than the previous number.
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4.
Look at this series: 80, 10, 70, 15, 60, ... What number should come next?
Answer & Solution
Answer: (A) 20

Solution: This is an alternating addition and subtraction series. In the first pattern, 10 is subtracted from each number to arrive at the next. In the second, 5 is added to each number to arrive at the next.
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5.
Look at this series: 544, 509, 474, 439, ... What number should come next?
Answer & Solution
Answer: (A) 404

Solution: This is a simple subtraction series. Each number is 35 less than the previous number.
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