**Problem Type Selection:**

* 1st number range:* Select the first number in the series in the selected range.

* Increment range:* Select the range in which the numbers in the sequence are to be separated.

* Number of items to fill:* Select the number of items to be filled.

* Order:* Build the series in ascending, descending or any order.

* Negative numbers:* Include negative numbers in the series.

* Count-by help:*Show the value separating the numbers in the sequence.

* Play:* Starts presenting the problems. By changing any of the configurable values the Play button could be pressed again.

* Lock Selection:* pressing this button will lock all the user selections.

**Enter the answer:** From the given number series find out the pattern. Find out Increment or decrement by what amount and fill the empty boxes with the right values.

* Show Answer* When the answer is