Choose the pattern that completes the sequence shown below.
The three horizontal rows evolve by independent, simple rules from frame to frame (left to right).
Row 1 (top): The last symbol alternates between a forward slash and a backslash: \[ /,\ \backslash,\ /,\ \backslash,\ \ldots \] The third frame shows \(/\), so the fourth must be \(\backslash\). Options (B) and (D) satisfy this; (A) and (C) do not.
Row 2 (middle): The side brackets cycle deterministically while the centre “\#” stays fixed. Track the left symbol across the first three frames: \[ [\ \to\ )\ \to\ ]\ \to\ \ ? \] i.e., it follows the cycle \([\,\to\,)\,\to\,]\,\to\,(\,\to\,[\,.s)\). Hence the fourth frame should have a left \((\).
Track the right symbol: \[ )\ \to\ (\ \to\ )\ \to\ \ ? \] so it alternates \( ) \leftrightarrow ( \); therefore the fourth frame should have a right \( ) \). Putting these together, Row 2 in the answer must read \[ (\ \#\ ) \] which only option (B) has. (A) gives \([\,\#\,(\), (C) gives \([\,\#\,)\), and (D) gives \(]\,\#\,)\).
Row 3 (bottom): The symbols remain fixed across frames (=\ %\ x), so all options match this row; it does not discriminate.
Combining the row-wise rules, the unique match is \(\boxed{(B)}\).


Count the number of squares in the given figure. 
Count the number of fonts used in the given set of words. 
Count the number of squares in the given figure. 
Shown below are three types of interlocking rods. There are in total 12 rods: 6 of type A (8 cm), 2 of type B (5 cm), and 4 of type C (4 cm). What is the maximum straight length obtainable by connecting the rods appropriately?
Based on the excerpt on Indonesian Shadow Puppet Theatre: 
Shown below is a belt–pulley arrangement. How many pulleys are rotating clockwise?




