Multiple choice

What is the 25th term of the sequence -5, 0, 5, 10 -------- ?

  1. 115

  2. 120

  3. 125

  4. 130
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A Correct answer
Explanation

This is an arithmetic progression with the first term a = -5 and common difference d = 5. The n-th term is given by a + (n - 1)d. For the 25th term, calculate -5 + (25 - 1) * 5 = -5 + 120 = 115.

AI explanation

This sequence is an arithmetic progression with the first term a equal to -5 and the common difference d equal to 5. Using the formula for the nth term of an arithmetic progression, Tn = a + (n - 1)d, we calculate the 25th term as -5 + (25 - 1)5. Solving -5 + (24 * 5) gives -5 + 120, which equals 115.

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