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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

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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

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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

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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

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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

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### Re: Exercise

What is the value of

if
?

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