42
up to 3o years. and you can ride him/her until he/she is 20
Exterior angles = 180 - 177 ie 3o; Number of sides = 360/exterior angle = 360/3 = 20.
30 is a composite number because it has more than two factors
yes
The number which can go into 78 and 20 is the GCD of the two numbers which is 2.
no. 20 is a prime number.
The number is 1
The number is 180.
The number is 60.
The number is 20.
The LCM of 8 & 20 is... 40