PROBLEM ON COUNTING-1) Principle of counting help pls!

United Arab Emirates

February 4, 2007 12:22am CST

This is Maths again... How many three-digit numbers can you write if you can use each digit more than once? many txs in advance

1 response

@traceyleeappel (510)

• Australia

4 Feb 07

The answer is 9 111 222 333 444 555 666 777 999

1 person likes this

• United Arab Emirates

4 Feb 07

thank u:-)