Saturday

February 28, 2015

February 28, 2015

Posted by **steve** on Tuesday, May 24, 2011 at 9:39pm.

A. 10

B. 60

C. 64

D. 120

- math -
**MathMate**, Tuesday, May 24, 2011 at 9:59pmIf it has to be greater than 700000, the first digit must be 7. That leaves us with 5 digits 2,2,2,4,4 to make the remainder of the number.

Here we have 5 digits of which 2 and 3 are identical, so the number of ways to choose the 5 digits is

C(5,3,2) = 5!/(3!2!)

I'll let you do the rest.

**Answer this Question**

**Related Questions**

Math. Explain - From the digits 1, 2, 3, and 4, how many positive integers are ...

Math - Use the clues to figure out the six-digit decimal number. 1. It is ...

Math - It's greater than 700 000 The sum of all it's digits is 14 It has no ...

math,correction, bobpursly - Since when is 5^7 =8125? if a number is a multple ...

math - read the clues to find each number. it is a 7 digit number. it has a 0. ...

Math - How many seven digit numbers less than 1.048,000 can be made using the ...

Math - How many seven-digit numbers less than 1,048,000 can be made using the ...

MATH - HOW MANY SEVEN-DIGIT NUMBERS LESS THAN 1,048,000 CAN BE MADE USING THE ...

Math - It is a 7-digit number It has a digit 0. The greatest digit is in the ...

math - use the clues to find the 7th digit mystery number. * it is between 7 and...