Im studying for my final next week and I need a little help.

"+ denotes an external direct product"

1. Find the number of elements of order 4 in Z_60+Z_12+Z_12.

2. In the ring Z+Z show: A = {(3x,y)|x,y in Z} is a maximal ideal.

For number 1 the LCM(60,12)=60 then is that the number of elements of order 4?

For number 2, I need some serious help starting.

Thanks Guys :)