Tuesday

July 29, 2014

July 29, 2014

Posted by **dj** on Wednesday, September 28, 2011 at 7:21pm.

- math -
**Steve**, Thursday, September 29, 2011 at 12:24amThe number is abcd

b+a = 3

c = 7b

d = 3a

Since c=7b, b = 0 or 1, or else the product would be > 10

b is not 0, or 7b would also be 0, and all digits are different. S, we now have

a17d

b+a=3, so a = 2:

217d

d=3a, so d=6 and our number is

2176

**Related Questions**

Math - Algebra - What is the linear equation that will represent the second ...

math - Lucy is thinking of a number. The number is greater than two hundred ...

math - 4 digit number. numeral in tens place 3 times the numeral in hundreds ...

math - Find the mystery number im a number between 300 and 400 im divisible by 3...

math - This is an SAT question of the day that I can't understand. The sum of ...

Math mrs sue - Can you check these? 18% of 90 is what number? i got 16.2 what ...

math - a number has 4 digits. no digits in the number are repeated. the digit in...

math percents - Can you check these? 18% of 90 is what number? i got 16.2 what ...

Maths - I am an odd number between 5000 and 5999.The number in the thousands ...

math - This is an SAT Question of the Day. The sum of the digits of a three-...