Try to figure out this riddle : an eight-digit number contains two 1's, two 2's, two 3's, and two 4's. the 1's are separated by one digit, the 2's are separated by two digits, the 3's are separated by three digits and the 4's are separated by four digits. what is the number?

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

Can someone me with my math problem pls my teacher is on my back about this

As a salesperson you get $50/day and $3.60/each sales you make.if you want to make $60 in one day, how many sales would you need need to make ? a 3b 4c 5d 6 show work.