Adding a Fifth Row

Classic programmed-learning exercises, refreshed for modern Java and presented in the current MrStyner.com portfolio style.

Modern Java noteThis archive has been refreshed for Java 25 LTS. Core language concepts remain useful, while outdated setup instructions and browser-era Java are labeled or replaced. Java 26 is the current feature release; Java 25 is used here as the stable teaching baseline.

Answer:

Ten.

Adding a Fifth Row

Ten Pins

 

The arrangement of the pins for Ten Pins is at right. Say that another row of pins were added. How many pins are in that row?

Row 1 has 1 pin.
Row 2 has 2 pins.
Row 3 has 3 pins.
Row 4 has 4 pins.
Row 5 has pins.

Click the image to see the added row.

QUESTION 2:

There are 10 pins total in the first four rows. Row five has 5 pins. How many pins are there in five rows?

10 + Pins in Row 5 =

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