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There are two children in a family.One o...

There are two children in a family.One of them is a girl child .What is probability that the other one is also a girl child?

A

a)0

B

b)1/2

C

c)1

D

d)cant be determined.

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UNITED BOOK HOUSE-KALIDHAN INSTITUTION-EXERCISE
  1. The digit in the unit's place of the number [(183)! +3 ^(183)] is-

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  2. The maximum value of sinthetacosthetais

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  3. There are two children in a family.One of them is a girl child .What i...

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  4. The probability that in a family of 5 members, exactly 2 members have...

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  5. The angles of a triangle are in the ration 5:4:3 .Find the circular me...

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  6. Prove that,sqrt((sectheta-1)/(sectheta+1))=cosectheta-cottheta

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  7. If A,B,C are positive acute angles and tan A=4/7and tan B=1/7,tan C=1/...

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  8. Find the value of 1/2sec80^@-2cos20^@

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  9. Find out the three cube-roots of 8.

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  10. In how many ways can the results of the three football matches be pred...

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  11. State the binomial theorem for a positve integral index.

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  12. Is 600 a terms of the A.P{7,11,15,19,…}.Give reason for your answer.

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  13. Find the equation of the line which passes through the point (4,-6)and...

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  14. The co-ordinates of a moving point P are.[a/2(cosectheta+sintheta)b/2(...

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  15. Find the value of p so that the roots of the equation 3x^2-2(7+9p)x+(8...

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  16. Do you think 4 as a complex number?if so why ?

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  17. Two unbaised dice are rolled together.Find the probability getting 2 d...

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  18. What is the chance that a leap year selected at random will contain 53...

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  19. sinalpha+sinbeta=aand cosalpha+cosbeta=bprove that ,tan((alpha-beta)/2...

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  20. sintheta=ksin(theta+phi).show that tan(theta+phi)=(sinphi)/(cosphi-K)

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