If the common difference of an A.P is -2, then a₃₀ – a₁₂ is equal to​

Question

If the common difference of an A.P is -2, then a₃₀ – a₁₂ is equal to​

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Katherine 2 months 2021-08-13T04:13:45+00:00 2 Answers 0 views 0

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    0
    2021-08-13T04:14:54+00:00

    Answer:

    · एक समांतर श्रेढ़ी (AP) संख्याओं की एक ऐसी सूची होती है … 2: किसी AP में, यदि a = –7.2, d = 3.6 और aₙ = 7.2 है, तो n का मान है।

    0
    2021-08-13T04:15:19+00:00

    {\bold{\blue{common \: difference (d) = -2}}}

    {\boxed{\red{a_{n} = a+(n-1)d}}}

    {\bold{\pink{a_{30}-a_{12}}}}

    = {\bold{\pink{a+(30-1)(-2)-a-(12-1)(-2)}}}

    = {\bold{\pink{-58+22}}} = {\boxed{\pink{-36}}}

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