Answers

2015-04-23T02:44:23+05:30

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
There are three operands,  and two  subtractions signs.  In the normal way of addition and subtraction with out use of some mathematical operators, it does not seem to be working out.

   {}^{10}C_8 - 12 - 2  = 31            combinations of selecting 8 items from 10, = 45

   64 - 28 - 10/2  =  31            used digits 6, 4, 2, 8, number 10 and a division operator.

   6² - 4 - Log10  = 31

   6²  - 2  -  Log_2 8  = 31              Logarithm of 8 to base 3.

   48  - 4²  - {}^2C_2        combinations of selecting 2 items from 2,  = 1.
   6*8  - 2⁴ -  {}^2C_2   

   8² / 2  - 2/4  - 2/4        = 31

     6²  -  12/ 6  - 12/4  =  31

2 4 2