Ivy Brothers
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For Active MindThu, 22 Jul 2010 15:49:29 +0000http://wordpress.org/?v=2.9.2enhourly1Grade 5 CHZ 76
http://www.ivybrothers.com/ivybrothers/2010/07/22/grade-5-chz-76/
http://www.ivybrothers.com/ivybrothers/2010/07/22/grade-5-chz-76/#commentsThu, 22 Jul 2010 15:49:29 +0000zhouChttp://www.ivybrothers.com/ivybrothers/?p=353Given perimeter 15, how many isosceles trainagles can be formed using only integers for side lengths?
]]>http://www.ivybrothers.com/ivybrothers/2010/07/22/grade-5-chz-76/feed/0Grade 7 CHZ 75
http://www.ivybrothers.com/ivybrothers/2010/07/18/grade-7-chz-75/
http://www.ivybrothers.com/ivybrothers/2010/07/18/grade-7-chz-75/#commentsSun, 18 Jul 2010 14:14:27 +0000zhouChttp://www.ivybrothers.com/ivybrothers/?p=347How many different four-digit numbers can be formed by rearranging the four digits in 2011?
]]>http://www.ivybrothers.com/ivybrothers/2010/07/18/grade-7-chz-75/feed/0Grade 7 CHZ 74
http://www.ivybrothers.com/ivybrothers/2010/07/18/grade-7-chz-74/
http://www.ivybrothers.com/ivybrothers/2010/07/18/grade-7-chz-74/#commentsSun, 18 Jul 2010 13:56:39 +0000zhouChttp://www.ivybrothers.com/ivybrothers/?p=344How many different 4-digit numbers can be formed by rearranging the four digits in 2010?
]]>http://www.ivybrothers.com/ivybrothers/2010/07/18/grade-7-chz-74/feed/0Grade 6 CHZ 73
http://www.ivybrothers.com/ivybrothers/2010/07/11/grade-6-chz-73/
http://www.ivybrothers.com/ivybrothers/2010/07/11/grade-6-chz-73/#commentsSun, 11 Jul 2010 18:39:17 +0000zhouChttp://www.ivybrothers.com/ivybrothers/?p=341In how many ways can 23 be wriiten as the sum of two primes? and the same question for 13?
]]>http://www.ivybrothers.com/ivybrothers/2010/07/11/grade-6-chz-73/feed/0Grade 6 CHZ 72
http://www.ivybrothers.com/ivybrothers/2010/07/11/grade-6-chz-72/
http://www.ivybrothers.com/ivybrothers/2010/07/11/grade-6-chz-72/#commentsSun, 11 Jul 2010 18:23:10 +0000zhouChttp://www.ivybrothers.com/ivybrothers/?p=338Read the Rest...]]>Kevin shows his Math final score to his friends Nick, Ronny and Austin, but his friends kept their scores hidden. Nick thinks: “At least two of us have the same score.” Ronny thinks “I didn’t have the lowest score.” Autin thinks “I didn’t get the highest score.” List the scroes from the lowest to highest for Kevin’s friends.
]]>http://www.ivybrothers.com/ivybrothers/2010/07/11/grade-6-chz-72/feed/0Grade 7 CHZ 71
http://www.ivybrothers.com/ivybrothers/2010/07/10/grade-7-chz-71/
http://www.ivybrothers.com/ivybrothers/2010/07/10/grade-7-chz-71/#commentsSun, 11 Jul 2010 02:51:30 +0000zhouChttp://www.ivybrothers.com/ivybrothers/?p=336Read the Rest...]]>24 4-digit whole numbers can be formed using each of the four digits (2, 4, 5, 7) exactly once. Only one of these numbers happens to be a multiple of another number in the set, which of the following is it? A) 5724, B) 7245, C) 7254, D) 7425, E) 7542.
]]>http://www.ivybrothers.com/ivybrothers/2010/07/10/grade-7-chz-71/feed/0Grade 7 CHZ 70
http://www.ivybrothers.com/ivybrothers/2010/07/10/grade-7-chz-70/
http://www.ivybrothers.com/ivybrothers/2010/07/10/grade-7-chz-70/#commentsSun, 11 Jul 2010 02:07:53 +0000zhouChttp://www.ivybrothers.com/ivybrothers/?p=328Ben throws two dices, what’s the probability for Ben to get the product of two numbers as multiple of 4?
]]>http://www.ivybrothers.com/ivybrothers/2010/07/10/grade-7-chz-70/feed/0Grade 6 CHZ 69
http://www.ivybrothers.com/ivybrothers/2010/07/10/grade-6-chz-69/
http://www.ivybrothers.com/ivybrothers/2010/07/10/grade-6-chz-69/#commentsSun, 11 Jul 2010 01:47:13 +0000zhouChttp://www.ivybrothers.com/ivybrothers/?p=326Ben throws two dices, what’s the probability for Ben to get the product of two numbers as a mulitple of 5?
]]>http://www.ivybrothers.com/ivybrothers/2010/07/10/grade-6-chz-69/feed/0Grade 4 CHZ 68
http://www.ivybrothers.com/ivybrothers/2010/07/10/grade-4-chz-68/
http://www.ivybrothers.com/ivybrothers/2010/07/10/grade-4-chz-68/#commentsSun, 11 Jul 2010 01:35:21 +0000zhouChttp://www.ivybrothers.com/ivybrothers/?p=324Read the Rest...]]>Max is asked to find the smallest 5-digit even number using each of these digits (1, 2, 4, 5, 9) once and only once, what’s the correct number?
]]>http://www.ivybrothers.com/ivybrothers/2010/07/10/grade-4-chz-68/feed/0Grade 5 CHZ 67
http://www.ivybrothers.com/ivybrothers/2010/07/10/grade-5-chz-67/
http://www.ivybrothers.com/ivybrothers/2010/07/10/grade-5-chz-67/#commentsSun, 11 Jul 2010 01:27:07 +0000zhouChttp://www.ivybrothers.com/ivybrothers/?p=322Think of two whole numbers, their product is 24 and their sum is -11, what are these numbers?
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