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The number of ways in which four letters...

The number of ways in which four letters can be put in four addressed envelops so that no letter goes into envelope meant for it is

A

8

B

12

C

16

D

9

Text Solution

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The correct Answer is:
D
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TS EAMCET PREVIOUS YEAR PAPERS-TS EAMCET ENGINEERING ENTRANCE EXAM QUESTION PAPER (2018)-MATHEMATICS
  1. If alpha1 , alpha2 ,……….,alphan are the roots of x^n + px + q = 0 , ...

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  2. All the roots of the equation . x^5 + 15x^4 + 94x^3 + 305 x^2 + 507 ...

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  3. The number of ways in which four letters can be put in four addressed ...

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  4. If the integer represented by 100! has K consective zeroes at the end,...

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  5. If n is a positive integer and the coefficient of x^10 in the expans...

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  6. If x = (2.5)/(3.6) - (2.5.8 )/(3.6.9) (2/5) + (2.5.8.11)/(3.6.12) (2/5...

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  7. If F1 and F2 are irreducible factors of x^4 + x^2 + 1 with real coeff...

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  8. The number of all the possible integral values of n gt 2 such that sin...

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  9. If alpha and beta are angles in the first quadrant sucn than tan alpha...

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  10. cos (pi/7) cos ((2pi)/(7) ) cos ( (4pi )/(7) ) =

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  11. If 0 lt theta lt pi/2 , the solution of the equation sin theta - 3 sin...

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  12. sin^(-1) ( 12/13 ) + cos^(-1) (4/5) + tan^(-1) (63/16) =

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  13. If sin h x = 3/4 and cos h y = 5/3 , then x + y =

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  14. In a Delta ABC , if a = 5 , b = 6, c = 7 , then the length of the m...

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  15. If Delta ABC , if cot A/2 , cot B/2 : cot C/2 = 4:3:2, then a : b : c ...

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  16. If Delta ABC if cos A cos B + sin A sin B sin C = 1 and C = pi/2 , ...

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  17. If a, b, c are distinct real numbers and P, Q, R are three points whos...

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  18. Let a = sin^2 x hati + cos^2 x hatj + hatk ,( x in R) . If the pairs...

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  19. Assertion (A) a, b, c, d are position vectors of 4 points such that 2a...

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  20. If |a| = 4, |b| = 5, |a - b| = 3 and theta is the angle between th...

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