Mystery product

18th February 2005 at 00:00
ABCDE is a five-digit integer. Each digit is different.

A six-digit integer X is formed by putting a 1 at the right-hand end of ABCDE.

Another six-digit integer Y is formed by putting a 1 at the left-hand end of ABCDE.

X is three times Y.

1ABCDE x 3 = ABCDE1

What is the five-digit integer ABCDE?

SOLUTIONS Fish tank (age 6 to 10) Mystery product (age 10 to 14) ABCDE is 42 857.

Subscribe to get access to the content on this page.

If you are already a Tes/ Tes Scotland subscriber please log in with your username or email address to get full access to our back issues, CPD library and membership plus page.

Not a subscriber? Find out more about our subscription offers.
Subscribe now
Existing subscriber?
Enter subscription number

Comments

The guide by your side – ensuring you are always up to date with the latest in education.

Get Tes magazine online and delivered to your door. Stay up to date with the latest research, teacher innovation and insight, plus classroom tips and techniques with a Tes magazine subscription.
With a Tes magazine subscription you get exclusive access to our CPD library. Including our New Teachers’ special for NQTS, Ed Tech, How to Get a Job, Trip Planner, Ed Biz Special and all Tes back issues.

Subscribe now