CrazyEngineers Logo

Find a+b

Sir / madam,
My question is

4a3+984=13b7.13b7 is divisible by 11. Find a+b.

Advance Thanks,
R.Rengaraj

Replies

  • dazzling
    dazzling
    i think the answer to question is :

    a = 1 and b=9

    hence 413 + 984 = 1397

    1397 is divisible by 11.

    because no number except 9 can make 13b7 divisible by 11.
  • dazzling
    dazzling
    hence a + b = 10

You are reading an archived discussion.

Related Posts

Create image map

some useful html tips Many times I have seen sometimes in some websites there are links created on image itself today i learn it...so I would like to share it...

Gre or gmat

I have passed my MCA in 2006 and also have almost 2 years of work experience; now I want to go for higher studies but I am confused whether I...

Hydrogen Inversion Temperature & non-Joule Thomson cooling

I looked up your article on Hydrogen Inversion Temperature & non-Joule Thomson cooling in Wikipedia. Its unfortunate that a know-it-all made you resign. I understand the concept from the formula...

Useful search shortcuts

I recall suggesting in a previous post that it would be useful to have search shortcuts to "My posts" and "Unanswered Posts". I am not sure whether this forum and...

about PID controller

can anybody tell me about how and why PID controlling is used in line follower robot?