Change 2/5 to a decimal

If you roll two fair dice (one black die and one white die), in how many ways can you obtain a 4 on at least one die?

Answer this question only if you know the answer! 30 points and

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant.given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.