exam Maths Puzzle Numerical Ability

A few years ago Portland instituted a new area code of 971 so that more phone numbers could be assigned. How many seven-digit phone numbers can be formed using this area code if the only restriction is that the first number cannot be 0 or 1?

Read Solution (Total 0)

exam Other Question

It is a fact that if an N is a composite number, then there exists a prime
p is less than or equal to sqrt(N) which is a factor of N. Given this, how many primes must be checked to determine if 2003 is prime?
How did you come up with the answer? find the missing quantity by using the simple interest formula

I=? P=6000 R=2%per year T=4months