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ANSWERS -HURDLE 25 : SERIES

Following are the answers with the logic after that. " A "has value 1,2,3,4,5,6 and 7.

Ans 1. -329 2A-A^3

Ans 2. -294 A^2-A^3

Ans 3. 147 A^3-4A^2

Ans 4. 616 (A+2)^3-A^2-(A+1)^2

Hurdle 25 : Series
Select the next number in the series given below : 1, -4, -21, -56, -115, 204.
Hurdle25.htm

  Links of Hurdle 1 to 30
Our Hurdles are prepared on the basis of past entrance tests  papers.

Hurdle.htm
  Links of Hurdle 31 to 78
Links of Hurdle 31 to 78 will be available only to the closed community of Urpercentile members.

Hurdle31onwards.htm

Ans 5. 4991 Factorial(A)-A^2

Ans 6. 5012 Factorial(A)-4A

Ans 7. -490 4a^2-2a^3

Ans 8. 4697 Factorial( A)-A^3

Ans9. -975 A^2 -2(A+1)^3

Ans10.
-367 Sum of previous numbers-A^2

Ans 11. -1441 Sum of previous numbers - A^3

Ans 12. -6208 Sum of previous numbers -Factorial( A)

Ans 13. -2639 A^(A-3)-Factorial(A)

Ans 14. 117600 A^(A-1)- A^2

Ans 15. 4648 Factorial(A)-A^3-A^2

Ans16 . C , Ans17 . E , Ans18 . G , Ans19. H ,
Ans20 . B , Ans21 . J

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