21 = Key of the Door
This represents the number 21 in Bingo, which is traditionally called out as "Key of the door".
21 equals dots on a dice
The answer is.... dots on a dice.
The solution is k = 9.
To find the value of d. SO: if d + 21 = 25, subtract 21 from each side, gives d = 25 - 21, so d = 4
-10
32
x*y = k where k is a constant.When x = 9, y = 7 so k = 9*7 = 63 When x = 21, 21*y = 63 so y = 3.
xy = K so K = 21
y = kx k = y/x = 21/-5 = - 21/5
15 multiplied by 21 is 315.
equals D repeater
21 Key of the Door (bingo call)21 Key of the Door (bingo call and a song about 21st birthday)