Number Series Look at this series: 15, __, 27, 27, 39, 39, ... What number should fill the blank? 51 23 39 15 51 23 39 15 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In this simple addition with repetition series, each number in the series repeats itself, and then increases by 12 to arrive at the next number.
Number Series 6 10 14 18 22 26 30 38 42 36 40 34 36 34 38 33 37 38 42 36 40 34 36 34 38 33 37 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP This simple addition series adds 4 to each number to arrive at the next.
Number Series 8 12 9 13 10 14 11 14 11 15 12 8 15 8 5 15 19 14 11 15 12 8 15 8 5 15 19 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP This is an alternating addition and subtraction series, in which the addition of 4 is alternated with the subtraction of 3.
Number Series 42 40 38 35 33 31 28 25 22 26 23 25 23 26 24 26 22 25 22 26 23 25 23 26 24 26 22 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP This is an alternating subtraction series in which 2 is subtracted twice, then 3 is subtracted once, then 2 is subtracted twice, and so on.
Number Series Look at this series: 21, 9, 21, 11, 21, 13, 21, ... What number should come next? 15 23 21 14 15 23 21 14 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 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.
Number Series 36 31 29 24 22 17 15 13 8 10 5 12 7 10 8 13 11 13 8 10 5 12 7 10 8 13 11 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP This is an alternating subtraction series, which subtracts 5, then 2, then 5, and so on.