Home
Class 12
MATHS
Let X denote the number of times heads o...

Let X denote the number of times heads occur in `n` tosses of a fair coin. If `P(X=4),\ P(X=5)\ a n d\ P(X=6)` are in AP; the value of `n` is `7, 14` b. `10 , 14` c. `12 ,7` d. `14 , 12`

A

7, 14

B

10, 14

C

12, 7

D

14,12

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • MOCK TEST 2

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise MCQS|50 Videos
  • MOCK TEST 4

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise MCQS|50 Videos

Similar Questions

Explore conceptually related problems

Let X denote the number of xx heads occur in n tosses of a fair coin.If P(X=4),P(X=5) and P(X=6) are in AP; the value of n is 7,14 b.10,14 c.12,7 d.14,12

An unbiased coin is tossed n times. Let X denote the number of times head occurs. If P(X=4), P(X=5) and P(X=6) are in A.P, then the value of n can be

An unbiased coin is tossed 'n' xx.Let the randon variable X denote the number of xx the head occurs.If P(X=1),P(X=2) and P(X=3) are in AP, find the value of n .

Let p_n denote the probability of getting n heads, when a fair coinis tossed m times. If p_4, p_5, p_6 are in AP then values of m can be

If 3x , x+14, 3x+4 are in A.P. ., then the value of x is

If ^nC_4, ^nC_5 and ^nC_6 are in A.P. then the value of n will be (A) 14 (B) 11 (C) 7 (D) 8

For X ~ B (n,p) and E (X) = 12, Var (X) = 4, then the value of n is

A fair coin is tossed 99 times. Let x be the number of times heads occurs. Then P(X=r) is maximum when r is .

MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-MOCK TEST 3-MCQS
  1. The values of theta in (0,(pi)/(2)) satisfying

    Text Solution

    |

  2. If A,B,C,D are (2,3,-1),(3,5,-3),(1,2,3),(3,5,7) respectively, then th...

    Text Solution

    |

  3. If sinA+cosB=a and sinB+cosA=b then sin(A+B)=

    Text Solution

    |

  4. The value of f(0), so that the function f(x)=(sqrt(a^2-a x+x^2)-sqrt(...

    Text Solution

    |

  5. In a class, there are 10 boys and 8 girls. When 3 students are selecte...

    Text Solution

    |

  6. The value of f(0), so that the function f(x)=(1-cos(1-cosx))/(x^(4...

    Text Solution

    |

  7. If y=sinx and u=cosx, then (dy)/(du) is equal to

    Text Solution

    |

  8. If the line joining the points (0,3)a n d(5,-2) is a tangent to the cu...

    Text Solution

    |

  9. Evaluate the following integrals: inte^(2x)((1+sin2x)/(1+cos2x))dx

    Text Solution

    |

  10. If a particle is moving the velocity v(t)=cos pit, along a straight li...

    Text Solution

    |

  11. If g(1)=g(2), then int(1)^(2)[f{g(x)}]^(-1)f'{g(x)}g'(x)dx is equal to

    Text Solution

    |

  12. If X and Y are two non-empty sets where f: X->Y,is function is define...

    Text Solution

    |

  13. Let X be a random variable which assumes values x1, x2, x3,\ x4 such t...

    Text Solution

    |

  14. The solution of dy/dx+x=xe^((n-1)y)

    Text Solution

    |

  15. Let X denote the number of times heads occur in n tosses of a fair coi...

    Text Solution

    |

  16. If the mean and the variance of a binomial variable X are 2 and 1 resp...

    Text Solution

    |

  17. If m is the slope of the tangent to the curve e^(y)=1+x^(2) , then

    Text Solution

    |

  18. The differential equation of all circles passing through the origin...

    Text Solution

    |

  19. If a1,a2,a3, ,an are in A.P., where ai >0 for all i , show that 1/(sqr...

    Text Solution

    |

  20. If a square matrix A is such that "AA"^(T)=l=A^(T)A, then |A| is equal...

    Text Solution

    |