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#176 2009-04-03 16:12:18
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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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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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