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The value of ((1+sqrt3i)/(1-sqrt3i))^(64...

The value of `((1+sqrt3i)/(1-sqrt3i))^(64)+((1-sqrt3i)/(1+sqrt3i))^(64)`is

A

0 (zero)

B

`-1`

C

1

D

i

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2015-MULTIPLE CHOICE QUESTIONS
  1. Let f:[-2,2]toR be a continuous function such that f(x) assumes only i...

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  2. The minimum value of costheta+sintheta+(2)/(sin2theta) for thetain(0,p...

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  3. The value of ((1+sqrt3i)/(1-sqrt3i))^(64)+((1-sqrt3i)/(1+sqrt3i))^(64)...

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  4. Find the maximum value of |z| when |z-(3)/(z)|=2, z being a complex nu...

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  5. Given that x is a real number satisfying (5x^(2)-26x+5)/(3x^(2)-10x+3)...

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  6. Let x(n)=(1-(1)/(3))^(2)(1-(1)/(6))^(2)(1-(1)/(10))^(2).............(1...

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  7. The variance of first 20 nutural numbers is

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  8. A fair coin is tossed a fixed number of times. If the probability of g...

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  9. If the letters of the word PROBABILITY are written down at random in a...

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  10. The least value of t so that the lines x=t+alpha,y+16=0 and y=ax are c...

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  11. If in a triangle DeltaABC,a^(2)cos^(2)A-b^(2)-c^(2)=0, then

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  12. {x""inR":"|cosx|gesinx}cap[0,(3pi)/(2)]

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  13. The number of distinct real roots of |(sinx,cosx,cosx),(cosx,sinx,co...

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  14. Let x(1),x(2),.........x(15) be 15 distinct numbers chosen from 1,2,3,...

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  15. Let [x] denote the greatest integer less than or equal to x Then the v...

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  16. A particle starts moving from rest from a fixed point in a fixed direc...

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  17. lim(nto oo)(sqrt1+sqrt2+......+sqrt(n-1))/(nsqrtn)=

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  18. If lim(xto0)(axe^(x)-blog(1+x))/(x^(2))=3 then the values of a, b are ...

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  19. Area of the region bonuded by y=|x|andy=-|x|+2 is

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  20. Let d(n) denote the number of divisors of n inciuding 1 and iteslf . T...

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