Blank Space Part 3

Logic Level 2

$\large 3 \, \square \, 4 \, \square \, 5$

There are $4^2 = 16$ ways in which we can fill the squares with $+, -, \times, \div$ .

Of all these 16 ways, What is the third largest possible number we can make?

Note :
You are not allowed to use parenthesis.
Obey the order of operations.

1 solution

Adi B
Jul 19, 2015

4^2 i.e 16 methods are of filling the blanks are: +- and -+ ; +x and x+ ; +/ and/+ ; -x and x- ; -/ and /- ; x/ and /x ; ++ and -- ; xx and // ;

Largest = 3 x 4 x 5 = 60 2nd Largest = 3 + 4 x 5 = 23 3rd Largest = 3 x 4 + 5 = 17

Same method here!!!

Noel Lo - 5 years, 10 months ago