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An unbiased coin is tossed three times i...

An unbiased coin is tossed three times in succession, then the probability of getting exactly one head is

A

`1/2`

B

`5/8`

C

`3/4`

D

`3/8`

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UNITED BOOK HOUSE-SET 12-EXERCISE
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  2. The angle between the lines whose direction ratios are proportional to...

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  3. An unbiased coin is tossed three times in succession, then the probabi...

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  4. The probability density function of a random variable X is f(x) = k(x-...

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  5. Solve:sin^(-1) cos(sin^(-1)x) = pi/3.

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  6. If A = [[4,5],[5,6]], show that A^2 = 10A + I where I is the unit matr...

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  7. Prove that, underset(xrarr0)lim (logcosx)/sin^2x = -1/2

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  8. If y = tan^(-1) (secx + tanx), find (d^2y)/(dx^2).

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  9. Prove that, underset(a)overset(b)int f(a + b - x)dx= underset(a)overse...

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  10. Solve:2^(x-y) dx + 2^(y-x) dy = 0

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  11. If x>1/2, show that the function f(x) = x(4x^2 - 3) is steadily increa...

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  12. Find the area in the fourth quadrant bounded by the curve y = x^3 - 8 ...

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  13. Can the numbers 1,2,3 be the direction ratio of a straight line? Give ...

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  14. Find the intercept form of a plane with intercepts 2,3 and 4 on the x,...

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  15. A and B are two independent events with P(A) = 2/5 and P(B) = 1/3, eva...

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  16. The mean and variance of a binomial distribution are 4 and 3 respectiv...

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  17. If tan^(-1)x, tan^(-1)y and tan^(-1)z are in A.P, find the algebric re...

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  18. Prove that, the inverse of a given square matrix, if its exists, is un...

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  19. Prove that, |(2a, a-b-c,2a),(2b,2b,b-c-a),(c-a-b,2c,2c)|=(a + b+c)^3

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  20. If sqrt(1 -x^2) + sqrt(1-y^2) = a(x-y), show that, (dy)/(dx) = sqrtfra...

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