Multiple choice

Find the 19th term of given sequence. - 4, - 1, 2, 5, ...

  1. 67

  2. 63

  3. 57

  4. 50
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D Correct answer
Explanation

This is an arithmetic progression with a = -4 and d = 3. The 19th term is a + (n-1)d = -4 + (18 * 3) = -4 + 54 = 50.

AI explanation

This sequence is an arithmetic progression with the first term (a) as -4 and a common difference (d) of 3. Using the formula for the nth term of an arithmetic progression, Tn = a + (n - 1)d, we substitute the values to get T19 = -4 + (19 - 1)3. This simplifies to -4 + (18 * 3), which equals -4 + 54, giving the result 50.

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