Search found 59 matches
Re: Six children, Arya, Betsy, Chen, Daniel, Emily, and Franco, are to be
6*5*4*3*2*1=720
5*4*3*2*(2!)=240
720-240=480
B
- by gentvenus
Tue Jul 28, 2020 11:36 am- Forum: Problem Solving
- Topic: Six children, Arya, Betsy, Chen, Daniel, Emily, and Franco, are to be
- Replies: 4
- Views: 579
Re: At an elite baseball camp, 60% of players can bat both right-handed
0.25(x + 60) = x
x + 60 = 4x
60 = 3x
20 = x
B
- by gentvenus
Mon Jul 27, 2020 12:17 pm- Forum: Problem Solving
- Topic: At an elite baseball camp, 60% of players can bat both right-handed
- Replies: 5
- Views: 510
- by gentvenus
Sat Jul 25, 2020 11:10 am- Forum: Problem Solving
- Topic: A gardener is going to plant 2 red rosebushes and 2 white rosebushes.
- Replies: 3
- Views: 597
Re: How many positive integers less than 100 are neither multiples of 2 or 3.
There are 49 multiples of 2
There are 33 multiples of 3
There are 16 multiples of 6
49 + 33 - 16 = 66
- by gentvenus
Fri Jul 24, 2020 1:53 pm- Forum: Problem Solving
- Topic: How many positive integers less than 100 are neither multiples of 2 or 3.
- Replies: 6
- Views: 1914
Re: If x is an even integer and y is an odd integer, which of the following is even?
Trial and error:
x = 0
y = 1
(A) 3(0) + 4(1) - 1 = 3
(B) 3(0) + 3(1) - 2 = 1
(C) 4(0) + 4(1) + 1 = 5
(D) 4(0) + 3(1) + 2 = 5
(E) 4(0) + 3(1) + 1 = 4, which is CORRECT.
- by gentvenus
Thu Jul 23, 2020 11:30 am- Forum: Problem Solving
- Topic: If x is an even integer and y is an odd integer, which of the following is even?
- Replies: 3
- Views: 1154
The number \(m\) is the average (arithmetic mean) of the positive numbers \(a\) and \(b.\) If \(m\) is \(75\%\) more
Problem Solving
Re: The number \(m\) is the average (arithmetic mean) of the positive numbers \(a\) and \(b.\) If \(m\) is \(75\%\) more
Let a = 4, so m = 1.75 x 4 = 7 and b must be 10 so that (4 + 10)/2 = 7
m (which is 7) is 70% of b (which is 10)
- by gentvenus
Sun Jul 19, 2020 12:45 pm- Forum: Problem Solving
- Topic: The number \(m\) is the average (arithmetic mean) of the positive numbers \(a\) and \(b.\) If \(m\) is \(75\%\) more
- Replies: 4
- Views: 705
A certain machine produces 1,000 units of product P per hour. Working continuously at this constant rate, this machine w
Problem Solving
Re: A certain machine produces 1,000 units of product P per hour. Working continuously at this constant rate, this machi
1000 x 24 x 7 = 168,000
- by gentvenus
Sun Jun 21, 2020 8:30 am- Forum: Problem Solving
- Topic: A certain machine produces 1,000 units of product P per hour. Working continuously at this constant rate, this machine w
- Replies: 3
- Views: 496
Carol purchased one basket of fruit consisting of 4 Apples and 2 Oranges and another basket of fruit
Problem Solving
Re: Carol purchased one basket of fruit consisting of 4 Apples and 2 Oranges and another basket of fruit
= [4/6 x 5/8] + [2/6 x 3/8]
= 13/24
- by gentvenus
Sat Jun 20, 2020 8:48 am- Forum: Problem Solving
- Topic: Carol purchased one basket of fruit consisting of 4 Apples and 2 Oranges and another basket of fruit
- Replies: 3
- Views: 561
Re: If X is the hundredths digit in the decimal 0.1X and if Y is the thousandths
To max a fraction, we must max the numerator (0.1X) and min the denominator (0.02Y)
The numerator is max when X = 9
The denominator is min when Y = 1
So, answer must be closest to 9/1 = 9
- by gentvenus
Fri Jun 19, 2020 9:51 am- Forum: Problem Solving
- Topic: If X is the hundredths digit in the decimal 0.1X and if Y is the thousandths
- Replies: 4
- Views: 760
The letters C, I, R, C, L, and E can be used to form 6-letter strings such as CIRCLE
Problem Solving
Re: The letters C, I, R, C, L, and E can be used to form 6-letter strings such as CIRCLE
E.
In the word CIRCLE:
There are 6 letters in total
There are 2 identical C's
So, the total number of possible arrangements = 6!/(2!) = 360
So, we can arrange CC, I, R, L, and E in 5! ways = 120
So, 360 - 120 = 240
- by gentvenus
Thu Jun 18, 2020 10:59 am- Forum: Problem Solving
- Topic: The letters C, I, R, C, L, and E can be used to form 6-letter strings such as CIRCLE
- Replies: 3
- Views: 492
If x is a positive integer and x + 2 is divisible by 10, what is the remainder when x^2 + 4x + 9 is divided by
Problem Solving
Re: If x is a positive integer and x + 2 is divisible by 10, what is the remainder when x^2 + 4x + 9 is divided by
C
x^2 + 4x + 9
= x^2 + 4x + 4 + 5
= (x + 2)^2 + 5.
Since x + 2 is divisible by 10, (x + 2)^2 is also divisible by 10.
Hence, the remainder w is 5.
- by gentvenus
Wed Jun 17, 2020 10:55 am- Forum: Problem Solving
- Topic: If x is a positive integer and x + 2 is divisible by 10, what is the remainder when x^2 + 4x + 9 is divided by
- Replies: 4
- Views: 624
If \(7(a - 1) = 17(b - 1),\) and \(a\) and \(b\) are both positive integers the product of which is greater than 1, then
Problem Solving
Re: If \(7(a - 1) = 17(b - 1),\) and \(a\) and \(b\) are both positive integers the product of which is greater than 1,
E.
7 and 17 are co-prime to each other
Least possible sum = 18 + 8 = 26
- by gentvenus
Tue Jun 16, 2020 8:51 am- Forum: Problem Solving
- Topic: If \(7(a - 1) = 17(b - 1),\) and \(a\) and \(b\) are both positive integers the product of which is greater than 1, then
- Replies: 4
- Views: 518
Re: 5 times n is three less than twice n. What number is three less than twice n?
Answer is A.
Rewrite: 5n = 2n - 3
Subtract 2n from both sides to get: 3n = -3
Solve: n = -1
Replace n with -1 to get: 2(-1) - 3
Finally: -2 - 3 = -5
- by gentvenus
Mon Jun 15, 2020 11:07 am- Forum: Problem Solving
- Topic: 5 times n is three less than twice n. What number is three less than twice n?
- Replies: 3
- Views: 476
Re: Re:
I hope my reply for you was helpful. Do let me know if you need more help or suggestions on any topic. I am always up for it Thanks. Hey i am facing some issues would you please help me out :? What issue? Please be clear. What is clear is that he/she would have figured it out since it was more than...
- by gentvenus
Sun Jun 14, 2020 12:08 pm- Forum: Lounge
- Topic: Low gpa, but wants to get into a school for MSA
- Replies: 13
- Views: 7114
- by gentvenus
Tue Jun 02, 2020 12:54 pm- Forum: GMAT Math
- Topic: Short Videos by Experts' Global - GMAT Shots | Quantitative
- Replies: 674
- Views: 66973