Multiple Choice
How many international direct-dialing numbers are possible if each number consists of a four-digit area code (the first digit of which must be nonzero) and a five-digit telephone numbers (the first digit must be nonzero) ?
A) 1,053,000,000
B) 486,000,000
C) 810,000,000
D) 729,000,000
E) 567,000,000
Correct Answer:
Verified
Correct Answer:
Verified
Q186: Let U denote the set of all
Q187: In how many ways can six students
Q188: In how many ways can a member
Q189: A student planning her curriculum for the
Q190: In how many ways can an investor
Q192: Let <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6027/.jpg" alt="Let
Q193: Let <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6027/.jpg" alt="Let .
Q194: In a survey of 122 consumers conducted
Q195: In a survey of 300 individual investors
Q196: If <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6027/.jpg" alt="If ,