Multiple choice

Find a number that is 3 less than the 10th term of the sequence -4, 2, 8, 14, 20, …

  1. 47

  2. 50

  3. 53

  4. 57
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A Correct answer
Explanation

Arithmetic sequence: a = -4, d = 6. 10th term = a + 9d = -4 + 9(6) = -4 + 54 = 50. Number 3 less than 50 is 47.

AI explanation

The given sequence is an arithmetic progression with a first term of -4 and a common difference of 6. Using the formula Tn = a + (n - 1)d, the 10th term is -4 + (10 - 1)6, which equals 50. The problem asks for the number that is 3 less than this term, so we subtract 3 from 50 to get 47.

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