# Number Series - Aptitude Questions and Answers - RejinpaulPlacement

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 Directions to Solve In each series, look for the degree and direction of change between the numbers. In other words, do the numbers increase or decrease, and by how much
11.
Look at this series: 8, 22, 8, 28, 8, ... What number should come next?

Solution: This is a simple addition series with a random number, 8, interpolated as every other number. In the series, 6 is added to each number except 8, to arrive at the next number.
12.
Look at this series: 3, 4, 7, 8, 11, 12, ... What number should come next?

Solution: This alternating addition series begins with 3; then 1 is added to give 4; then 3 is added to give 7; then 1 is added, and so on.
13.
Look at this series: 58, 52, 46, 40, 34, ... What number should come next?

Solution: This is a simple subtraction series. Each number is 6 less than the previous number.
14.
Look at this series: 21, 9, 21, 11, 21, 13, 21, ... What number should come next?