1
A sequence starts at 16.
3 is subtracted each time.
What is the first number in the sequence that is less than zero?



Answer :

To solve this problem, let's start at the beginning of the sequence and perform the subtraction step-by-step until we find the first number that is less than zero.

The sequence starts with the following number:

1. [tex]\( 16 \)[/tex] Now we will keep subtracting [tex]\(3\)[/tex] from the most recent number in the sequence and count how many steps it takes to reach a number less than zero. The sequence would thus progress as follows: 2. [tex]\( 16 - 3 = 13 \)[/tex] 3. [tex]\( 13 - 3 = 10 \)[/tex] 4. [tex]\( 10 - 3 = 7 \)[/tex] 5. [tex]\( 7 - 3 = 4 \)[/tex] 6. [tex]\( 4 - 3 = 1 \)[/tex] 7. [tex]\( 1 - 3 = -2 \)[/tex] The first number less than zero in this sequence is [tex]\(-2\)[/tex], and we reached it after [tex]\(6\)[/tex] steps of subtracting [tex]\(3\)[/tex] (since we started at [tex]\(16\)[/tex]). Therefore, the first number in the sequence that is less than zero is [tex]\(-2\)[/tex].