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If a,b,c are simultaneously in an A.P. a...

If a,b,c are simultaneously in an A.P. and a G.P. , then : `a^(b).b^(c).c^(a)=`

A

-1

B

0

C

1

D

none of these

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A
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MARVEL PUBLICATION-SEQUENCES AND SERIES -MULTIPLE CHOICE QUESTIONS
  1. If a,b,c are unequal numbers in A.P. such that a,b-c,c-a are in G.P. t...

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  2. If a, b, c are in A.P. and x, y, z are in G.P., then prove that : x^...

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  3. If a,b,c are simultaneously in an A.P. and a G.P. , then : a^(b).b^(c)...

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  4. if S is the sum , P the product and R the sum of reciprocals of n term...

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  5. The A.M. of a and c is b. If b is also the G.M. of a and c+1 then : ...

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  6. If the A.M. and G.M. of the roots of a quadratic equation in x are P a...

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  7. If the A.M. of the roots of a quadratic equation is (8)/(5) and the A....

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  8. 8^(2)+9^(2)+10^(2)+ cdots +22^(2)=

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  9. 60^(2)-59^(2)+58^(2)-57^(2)+ cdots +2^(2)-1^(2) =

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  10. 40^(3)-38^(3)+36^(3)-34^(3)+ cdots +4^(3)-2^(3)=

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  11. If sum(r=1)^(n) r=210, then : sum(r=1)^(n) r^(2)=

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  12. sum(r=1)^(20) r (2r+1)=

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  13. sum(r=1)^(10) (4r-3)^(2) =

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  14. Find the sum of the following series: 5+55+555+ to\ n\ t e r m sdot

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  15. 1.2+3.02+5.002+7.0002+ cdots to n terms =

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  16. 1^(3)+2^(3)+3^(3)+ cdots +20^(3)=

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  17. 7^(2)+8^(2)+9^(2)+...+20^(2)=

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  18. 11^(2)+12^(2)+13^(2)+ cdots +32^(2)=

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  19. Suppose that F(n +1) =( 2f(n)+1)/2 for n = 1, 2, 3,.....and f(1)= 2 ...

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  20. If a, b, c, d, e, f are in А.Р., then e-c is equal to

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