Number Series

Answer: Option BExplanation:This is a simple alternating addition and subtraction series. In the first pattern, 3 is added; in the second, 2 is subtracted.

Answer: Option BExplanation:This is an alternating number subtraction series. First, 2 is subtracted, then 4, then 2, and so on.

Answer: Option DExplanation: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.

In this alternating repetition series, the random number 21 is interpolated every other number into an otherwise simple addition series that increases by 2, beginning with the number 9.

This is a simple alternating subtraction series, which subtracts 2, then 5.

In this simple addition series, each number increases by 0.8.

In this addition series, 1 is added to the first number; 2 is added to the second number; 3 is added to the third number; 4 is added to the fourth number; and go on.

8 x 1 - 2 = 66 x 2 - 3 = 99 x 3 - 4 = 2323 x 4 - 5 = 8787 x 5 - 6 = 429 ...

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

Answer: Option BExplanation:This is a simple division series; each number is one-half of the previous number.In other terms to say, the number is divided by 2 successively to get the next result.4/2 = 22/2 = 11/2 = 1/2(1/2)/2 = 1/4(1/4)/2 = 1/8 and so on.

This is a simple addition series, which begins with 2 and adds 6.

In this simple addition series, each number is 5 more than the previous number.

In this alternating repetition series, a random number, 33, is interpolated every third number into a simple addition series, in which each number increases by 2.

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.

This is a simple multiplication series. Each number is 3 times more than the previous number.