Brain teaser – Make this equation true, 999999999999999 = 1990

Insert +, -, x or / in suitable places on the left side of = so as to make the equation true:

999999999999999 = 1990

[contact-form 8 “brain-teaser”]
Cross a rickety bridge in 17 minutes | Back – Next | Challenge your brain – Boys vs. Girls jigsaw puzzle

About Ken.Kabaki

Check Also

New Brain Teaser – What is that number?

There is a number less than 3000 that when divided by 2 leaves a remainder …

6 comments

  1. (9999-999)/9+999-9+9-9

  2. (9999/9999)+999+999-9

  3. 999+999-9+(9999/9999)

  4. 999+999-9+(9/9)+999-999=1990

  5. (9999/9)-(999/9)+(999-9)+(9-9)

    Brackets don’t matter

Leave a Reply