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#176 2009-04-03 16:12:18

ganesh
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Re: Exercise

What is the probability of a leap year, selected at random, containing 53 Sundays?


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#177 2009-04-03 16:21:47

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Re: Exercise

Five letters are are placed at random in five addressed envelopes. Find the probability that all the letters are not put in the right covers.


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#178 2009-04-03 16:32:06

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Re: Exercise

A can solve 90% of the problems in a book and B can solve 70% of them. What is the probability that at least one of them would solve a problem selected at random from the book?


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#179 2009-04-03 20:42:46

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Re: Exercise

The sum of the numerator and the denomintor of a fraction is 11. If 1 is added to the numerator and 2 is subtracted from the denominator, it becomes

.
Find the fraction.


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#180 2009-04-03 20:53:35

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Re: Exercise

The product of two fractions is


and their quotient is
.
Find the greater fraction.


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#181 2009-04-03 21:33:49

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Re: Exercise

One fifth of a number is equal to


of another number. If 35 is added to the first number, it becomes four times the second number. What is the second number?


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#182 2009-04-03 21:46:44

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Re: Exercise

In a pair of fractions, fraction A is twice the fraction B and the product of the two fractions is

.
What is the value of fracion A?


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#183 2009-04-03 21:56:21

ganesh
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Re: Exercise

The denominator of a fraction is 3 more than the numerator. If the numerator as well as the denominator are increased by 4, the fraction becomes

.
What is the original fraction?


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#184 2009-04-03 22:03:01

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Re: Exercise

The difference between the numerator and the denominator of a fraction is 5. If 5 is added to the denominator, the fraction is decreased by

.
Find the fraction.


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#185 2009-04-04 02:54:31

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Re: Exercise

What is the value of

?


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#186 2009-04-04 03:02:59

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Re: Exercise

What are the values of a, b, and c if


and

are perpendicular to each other?


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#187 2009-04-04 03:11:45

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Re: Exercise

What is the slope of the normal to the curve y = 3x2 at the point whose x coordinate is 2?


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#188 2009-04-04 17:58:11

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Re: Exercise

If

,
then what is the value of a and b?


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#189 2009-04-04 20:33:05

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Re: Exercise

If


and
,
then what are the values of x and y for which A and B would be equal?


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#190 2009-04-04 20:47:11

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Re: Exercise

If

,
and
,
what is the value of k?


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#191 2009-04-04 21:04:11

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Re: Exercise

If f(x) = 2x2 - 3x and

,
then what is f(A)?


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#192 2009-04-04 22:27:13

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Re: Exercise

If

,
what is X equal to?


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#193 2009-04-04 22:42:19

ganesh
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Re: Exercise

If

,
what are x and y equal to?


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#194 2009-04-04 22:51:38

ganesh
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Re: Exercise

If

,
what are the values of x and y?


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#195 2009-04-05 00:07:32

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Re: Exercise

If 3 sinθ + 5 cosθ = 5, then what is the value of 5 sin θ - 3 cos θ?


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#196 2009-04-05 00:17:51

ganesh
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Re: Exercise

What is the value of

?


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#197 2009-04-05 00:39:54

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Re: Exercise

If tanθ + sinθ = m and tanθ - sinθ = n, then what is the value of

?


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#198 2009-04-05 00:53:28

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Re: Exercise

What is the value of x if

?


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#199 2009-04-05 02:25:43

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Re: Exercise

If

,
what is the value of
?


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#200 2009-04-05 02:57:17

ganesh
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Re: Exercise

What is the value of


if
?


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