Question

the sum of three consecutive odd numbers is 21 and find the numbers

Answer 1

three consecutive odd numbers are - X , X+2,X+4..
now .. it is given that the sum of these three numbers are 21.
so ,
X+(X+2)+(X+4) = 21
3X+6 = 21
3X=21-6
3X=15
X= 5

now the three numbers are :-
X = 5
X+2= 7
X+4=9