Question

if i start with 3 and count by 4's until i reach 99, i get 3, 7, 11, ..., 99, where 3 is the first number, 7 is the second number, 11 is the third, and so on. if 99 is the Nth number, what is the value of N

Answer 1

Answer: 25

Explanation:

Start with the first number, which is 3.

Add (N−1) times the common difference of 4.

Set the sum equal to 99, the value of the last number in the sequence.

Solve the equation for N by isolating it.

Divide both sides of the equation by 4.

N is equal to 25, representing the position of the last number in the sequence.