which is the first negative term in this sequence? 21,19,17
To find the first negative term in the sequence 21, 19, 17, we can observe that the terms are decreasing by 2.
Starting with the first term, 21, we can subtract 2 until we reach a negative number.
The sequence after subtracting 2 each time is as follows:
21, 19, 17, 15, 13, 11, 9, 7, 5, 3, 1, -1.
Therefore, the first negative term in the sequence is -1.