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Byju's Answer
Standard XII
Mathematics
Properties of Inequalities
what is a20- ...
Question
what is a
20
- a
15
, if the common difference of an AP is 3 ?
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Solution
Given: d = 3
a
20
- a
15
=?
(a + 19d) - (a + 14d) = a + 19d - a - 14d
= 19d - 14d
= 5d
= 5(3)
= 15 (answer)
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? [4 MARKS]
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