in a certain archery competition , points were awarded as follows : the first place winner receives 11 points , the second place winner receives 7 points , the third place winner receives 5 points and the fourth place winner receives 2 points . no other points are awarded . john participated several times in the competition and finished first , second , third , or fourth each time . the product of all the points he received was 15400 . how many times did he participate in the competition ?
"15400 = 2 * 2 * 2 * 5 * 5 * 7 * 11 john participated 7 times . the answer is c ."
floor(sqrt(divide(15400, multiply(multiply(multiply(11, 7), 5), 2))))