Question

If the common difference of an A.P is 5, then the value of a18 -a15 is ______

Answer 1

HEYA!
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$given \: \: that \: common \: difference \: \: d \: = 5 \\ \\ to \: find = a18 - a15 \\ \\ = > a + 17d - (a + 14d) \\ \\ = > a + 17d - a - 14d \\ \\ = > 3d \\ \\ put \: \: d = 5 \\ \\ = > > 3(5) = 15$
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Answer 2

Answer: 25

Step-by-step explanation: don't get confused the correct answer is 25 ......

I m 100 percent sure