Question

the sum of three consecutive odd number is 21 . so fund the number

Answer 1

Let the three consecutive odd numbers be x+1 , x+3 , x+5.

I number =
x+1 = 21
x = 21 - 1 = 20.

II number =
x+3 = 21
x = 21 - 3 = 18.

III number
x+5 = 21
x = 21 - 5 = 16.

HOPE THIS HELPS YOU.

Answer 2

LET THE ONE CONSECUTIVE ODD NO. BE X
THEN OTHER TWO NO. WILL BE X + 2 AND X + 4

ACCORDING TO QUESTION,

X + X +2 + X + 4 = 21
» 3X + 4+2 = 21
» 3X + 6 = 21
» 3X = 21 - 6
» 3X = 15
» X = 15/3
» X = 15 ANSWER