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In this question there are two rules that apply to squares with dots as they move down the columns of the grid.

First rule: The squares in the first and second rows of the grid move down one place and the number of dots decreases by one. Following this rule, for the next diagram of the sequence, there should be two dots in the first column, third row and seven dots in the third column, second row.

The correct answer, therefore, could be A, C or D.

Second rule: The squares in the bottom row of the grid move to the top row and the numbers of dots are doubled. Following this rule, for the next diagram in the sequence, there should be twelve dots in the first row, second column.

The correct answer, therefore, is C.

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In this question, there is a black triangle and a grey triangle which each has its own rule.
The black triangle always rotates by 90? anticlockwise. Following this rule, for the next diagram in the sequence, the black triangle should be in the top quadrant of the diagram. The correct answer, therefore, could be A, B or D.
The grey triangle also rotates, but by 90? clockwise each time. However, the shade of the grey triangle also changes from light grey to medium grey to dark grey, back to light grey again.

Following this rule, for the next diagram of the sequence, the grey triangle should be in the left quadrant of the diagram and should be dark grey.

The correct answer, therefore, is B.

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In this question there is a grid of squares.
There is a single rule to follow - each time the squares of the grid are translated 1 square to the
right and three squares down. Following this rule, the next diagram of the sequence must be A.

The Correct Answer is A

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In this question there are two rules to follow
The first rule is that each time the number of inverted matches, starting from the left, increases by two.
The second rule is that the number of separated matches, starting from the right, increases by one.
Therefore the next diagram in the sequence will have ten inverted matches and five separated matches.

The correct answer is C.

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In this question there are two rules to follow that are applied one after the other.
The first rule is that the flag is reflected in the vertical axis.
The second rule is that the flag is rotated by 90? clockwise.
To find the missing diagram of the sequence, the second rule should be applied.

The correct answer, therefore, is B.