Question

the next term of an arithmetic progression is 13, 10, 7....is
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Answer 1

Answer:

4

Step-by-step explanation:

in every number 3 is subtracted from previous so ans is 4

Answer 2

Answer:

$a = 13 \\ \huge a \small{2}= 10 \\ d = \huge a \small{2} - a = 10 - 13 = - 3 \\ \huge a \small{4} = a + (n - 1)d \\ = 13 + (4 - 1) - 3 \\ = 13 + 3 \times - 3 \\ = 13 - 9 = 4$

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