25
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Let the number be x: x-25+2 = 27 x-23 = 27 x = 27+23 x = 50
25 and 27 are composite numbers because they both have factors in addition to 1 and themselves.
arrange the no. ascending and use the formula (n+1)/2=nth number...arranged no. :20 23 25 25 27 27 27 29 31 35 37 41 43n is the number of the numbers...substitute: (13+1)/2= 7th no. from the arranged numbers...so the answer 27
It is: 27 because 3*3*3 = 27
..... 27, 24, 26, 25, 25, 26, 24, 27, 23 .....A number is decreasing by 1 while another number is increasing by 1