Card 0 of 2
A sequence begins as follows:
What number will replace the circle?
The sequence of numbers is formed by starting with 5, and, for each consecutive term, adding a quantity that begins with 3 and doubles each time. The sequence is:
- the number that replaces the square;
- the number that replaces the circle.
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In the following list, each value of is calculated from its value of
the same way. Fill in the blank.
is calculated from
by taking the square of
, then affixing a negative symbol in front if and only if
is odd. Therefore, to get the
that corresponds to
, first, square 5:
Next, affix a negative symbol in front to make it , the correct answer.
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