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Saturday, August 18, 2007
GRE MATH PROBLEM OF THE DAY
What percent of the integers between 100 and 999, inclusive, have all three digits the same? (A) 1% (B) 2% (C) 3% (D) 4% (E) 5%
they r totaly 8 number r there in between 100 to 999...that is 111 222 333 444 555 666 777 888 and 999 is not include ... so (8\888)*100 = 0.98 therefore it is 1%
First we have to find the how many numbers b/w 100 to 999 inclusiv. mean total numbers b/w a to b inclusive is b-a+1. that is total numbers are 900 the numbers have same digits are 111,222,333,444,555,666,777,888,999 Totally 9 are ther
1% as there is one three digit no. with the same no. for every hundred nos. and so there are totally 900 nos. between 100 and 999 therefore the percentage can be calculated as follows: [9/900]*100=1%
there r nine numbers ex. 111,222,........999
ReplyDeletetotal no. from 100 to 999 are 900
then percentage is
(9\900)*100
=1%
they r totaly 8 number r there in between 100 to 999...that is 111 222 333 444 555 666 777 888 and 999 is not include ... so (8\888)*100 = 0.98 therefore it is 1%
ReplyDeleteThey are 8 numbers (111 - 888) and their percent from 899 numbers is 0.89% which is approximately 1% so the closest answer is A.
ReplyDeleteans is 1 %
ReplyDeleteans a
ReplyDeletea=1%
ReplyDeleteA
ReplyDeleteans is 1%
ReplyDeleteFirst we have to find the how many numbers b/w 100 to 999 inclusiv.
ReplyDeletemean total numbers b/w a to b inclusive is b-a+1.
that is total numbers are 900
the numbers have same digits are
111,222,333,444,555,666,777,888,999
Totally 9 are ther
Percentage=9/900*100=1%
answer is 1%
ReplyDelete1% as there is one three digit no. with the same no. for every hundred nos. and so there are totally 900 nos. between 100 and 999 therefore the percentage can be calculated as follows:
ReplyDelete[9/900]*100=1%
answer is a
ReplyDelete1%
ReplyDeletea=1%
ReplyDelete1%
ReplyDeletemy answer is 1% because out of 900 numbers there are only 9 numbers having allthree same digits ie 9/900=1%
ReplyDelete1% damsure
ReplyDeletehey de answer is 1% but it shud b 8/898 but not 8/888 as mentioned by [b]kirankumar3561[/b]cos v hav 999-100-1 numbers b'ween 100-999
ReplyDelete100*9/(899+1)=1%
ReplyDelete1%.
ReplyDeleteA
ReplyDeleteYES by calculation A 1% is correct answer
ReplyDelete