A Friedman number is a whole number which can be written in the form of an expression with same value by using its own digits. The expression can contain the symbols +, −, ×, (, ), and exponentiation, even repeatedly and at any place (e. g. the minus sign could appear on the far left), as well as concatenation of digits (e. g. 1,2 → 12). For example, 2502 = 2 + 502 and 1024 = (4−2)10 are Friedman numbers.

Which of the following numbers is a Friedman number?
a) 27
b) 36
c) 16
d) 34
e) 125
f) 83
g) 112

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

The fraction of defective integrated circuits produced in a photolithography process is being studied. a random sample of 300 circuits is tested, revealing 17 defectives. (a) calculate a 95% two-sided confidence interval on the fraction of defective circuits produced by this particular tool. round the answers to 4 decimal places. less-than-or-equal-to p less-than-or-equal-to (b) calculate a 95% upper confidence bound on the fraction of defective circuits. round the answer to 4 decimal places. p less-than-or-equal-to

Suppose a store sells an average of 80 cases of soda per day. assume that each case contains 24 cans of soda and that the store is open 10 hours per day. find the average number of soda that the store sells per hour.