यदि, a(n) = 3 - 4n हो, तो दर्शाइए कि a(1...

यदि, `a_(n) = 3 - 4n` हो, तो दर्शाइए कि `a_(1), a_(2), a_(3)`,.... एक-A.P. बनाते हैं। `S_(20)` भी ज्ञात कीजिए।

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The correct Answer is:

`- 780`

यदि, a(n) = 3 - 4n हो, तो दर्शाइए कि a(1), a(2), a(3),.... एक-A.P. बन...
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a(1),a(2),a(3),......,a(n), are in A.P such that a(1)+a(3)+a(5)=-12 an...
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If a(n)=3-4n, then show that a(1),a(2),a(3), … form an AP. Also, find ...
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a1,a2,a3.....an are in H.P. (a(1))/(a(2)+a(3)+ . . .+a(n)),(a(2))/(a(1...
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Let a(1),a(2),a(3), . . .,a(n) be an A.P. Statement -1 : (1)/(a(1)a(...
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If in an A.P. {a(n)}, a(1)+a(5)+a(10)+a(15)+(20)+a(24)=225 then : S...
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If a(1) ge 0 for all t and a(1), a(2), a(3),….,a(n) are in A.P. then s...
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If a(1), a(2), a(3),…, a(n) be in A.P. Show that, (1)/(a(1)a(2)) + (...
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STATEMENT-1 : If a, b, c are in A.P. , b, c, a are in G.P. then c, a, ...
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