Question

Find the 20th and 25th terms of the AP:3,8,13,18

Answer 1

Answer:

$20th \: \: term \: \: = a + 19d \\ \\ = 3 + 19 \times 5 = 98 \\ \\ 25th \: \: term \: \: = 3 + 24 \times 5 = 3 + 120 = 123$

Answer 2

Answer:

98,123

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