No.
most parts
Racquetballs
No, they are hollow with air in the center.
100
There are 144 racquet balls in a gross
Restate the question please. If you are sponsored getting new racquetballs shouldn't be a problem. If not, you're going to have to purchase some new racquetballs if yours are no good. If you are referring to their guarantee, in the past I took them back to the sports store I bought my can from. Some willingly gave me a new can of balls, other times they had no idea what to do. It has been awhile since I tried.
they will only change the ball if it breaks
hockey, football, basketball, racquetballs tennis, soccer, bmx, and skateboarding.
Most raquetballs are blue. Yet they may come in red, green, black, purple, and also pink.
If you are asking why its 'Singapore,singapore', its because there is only one state in Singapore
Singapore is a city state and country of its own. Singapore doesn't have a capital, but the correct term of the capital you find in a atlas would be "Capital of Singapore: Singapore, Singapore"