document.write( "Question 1013654: A number sequence is as follows: 4, 8, 12, 16, 20, 24, .... If 4 is the 1st number in the sequence what is the sum of the first 300 numbers in the sequence? \n" ); document.write( "
Algebra.Com's Answer #629906 by fractalier(6550)\"\" \"About 
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\n" ); document.write( "The sum of the first 300 integers: 1,2,3,4,5,... is found by
\n" ); document.write( "S = n(n+1)/2 = 300*301/2 = 45150
\n" ); document.write( "but since our sequence is four times that, that is, ours goes by 4,8,12,16,...,
\n" ); document.write( "we will merely multiply our answer by four and get
\n" ); document.write( "S = 4*45150 = 180600
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