Weekly Brain Teaser


Every week we feature a Brain Teaser or a thought-provoking question.

If you have one that you would like to share with fellow engineers, please email it to info@engineeringdaily.net.

This week’s brain teaser

Solve the following with the conditions given:

DA – BC = BD

a) All the numbers used A, B, C and D are prime

b) The answer BD is also a prime number

c) The numbers DA and BC are not prime

d) Also the number A < C

Find the numbers A, B, C and D


    Subscribe to be alerted when an answer and a new teaser has been posted.

    Your name:

    Your answer:


    How good are you in calculating? | Back – Next | Do you remember algebra?

    Similar Posts


    Leave a Reply

    This site uses Akismet to reduce spam. Learn how your comment data is processed.