Final answer:
The subnet mask for the IP address 132.150.23.98/20 is 255.255.240.0 in decimal and 11111111.11111111.11110000.00000000 in binary.
Step-by-step explanation:
The subnet mask for the IP address 132.150.23.98/20 in decimal is 255.255.240.0 and in binary is 11111111.11111111.11110000.00000000.