Answer:

Introduction:
In right hand exercises, the thumb (1st finger) is typically used to play the first note. The thumb is an important finger in piano playing as it provides stability and control while playing.

Explanation:
When playing the piano, each finger is assigned a number starting from the thumb as the 1st finger and ending with the pinky finger as the 5th finger.

Why the thumb is used to play the first note:
The thumb is the strongest and most flexible finger on the hand, making it ideal for playing the first note in a right hand exercise. Here are a few reasons why the thumb is used:
- Reach: The thumb is the closest finger to the other fingers, allowing it to easily reach the keys without straining.
- Stability: The thumb is positioned lower and slightly under the hand, providing stability while playing.
- Control: The thumb has a wider range of motion compared to the other fingers, making it easier to control the keys and produce the desired sound.
- Independence: The thumb is less dependent on the other fingers, allowing it to play the first note smoothly without interfering with the other fingers' movements.

Importance of proper finger positioning:
Proper finger positioning is crucial for developing good piano technique and preventing strain or injury. The fingers should be curved and relaxed, with the thumb positioned slightly under the hand. This position allows the fingers to move freely and independently, enabling the pianist to play with accuracy and expressiveness.

Conclusion:
In right hand exercises, the thumb (1st finger) is typically used to play the first note. The thumb provides stability, control, and independence necessary for playing the piano effectively. Proper finger positioning is important to develop good technique and prevent strain or injury.