Given below is a write-up on the discovery of the mouse, but the sentences are mixed up. What is the correct logical sequence?
I. We use the mouse not just because Engelbart invented it, but because it performed best versus other pointing devices.
II. Years later, while seeking a screen-selection device, he recalled these notes and, with Bill English, built the first mouse.
III. At a conference, he scribbled an idea about two wheels at right angles to track motion on a plane.
IV. The mouse won because it was easiest to use.
V. As a student he measured areas under curves with a device whose wheels rolled in one direction and slid sideways at $90^\circ$.
VI. Doug Engelbart tells how he invented the mouse.


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?




