On line solution of mathematical problems: change false scores into scores: 10 / 3 and 11 / 6 and 20 / 3 and 29 / 18 and 21 / 20

On line solution of mathematical problems: change false scores into scores: 10 / 3 and 11 / 6 and 20 / 3 and 29 / 18 and 21 / 20


Three and one-third, one and five sixths, six and two-thirds, one and eleven eighteenth, one and one twentieth



A fifth grade math problem with a score. The numerator of the score is 5. After it is changed into a false score, the numerator is 29. What is the possible score?


The answer is not unique. The numerator of a false fraction is obtained by multiplying the integral part by the denominator and adding the numerator, so 29-5 = 24
Because 4x6 = 24, because the numerator is 5, the denominator is 6, and the integral part is 4, that is, four and five sixths
Because 3x8 = 24, the denominator is 8 and the integral part is 3, that is, three and five eighths
Because 2x12 = 24, the denominator is 12 and the integral part is 2, that is, two and two twelfth



A math problem: the numerator of a false fraction is 119, which becomes the integral part with fraction


The numerator of a false fraction is 119. After it is transformed into a band fraction, the integral part, numerator and denominator are three consecutive natural numbers. How to find the band fraction?
11 and 9 / 10
There are two possibilities:
Let integer be the minimum natural sequence equation a (a + 2) + A + 1 = 119
After solving the equation, a is not an integer
Let the integer be the maximum natural sequence equation a (A-1) + A-2 = 119
After solving the equation, a = 11



0.6=3:______ =______ ÷15=______ (percentage)


So the answer is: 5, 9, 60%



10 divided by [(1 + 0.2) divided by 0.4] = how much


10÷[(1+0.2)÷0.4]
=10÷(1.2÷0.4)
=10÷3
=Three and one-third



3 / 5 = () divided by 25 = 30 / 5 = 27: () = () percent sign = () decimal


3 / 5 = (15) divided by 25 = 30 / 50 = 27: (45) = (60%) percent sign = (0.6) decimal



() divide by 4 = () 4 / 4 = 0.25 = () percent sign


(1) divide by 4 = (1) 4 / 4 = 0.25 = (25) percent sign



How to divide C (8,3) by C (10,3) in probability theory


C(m,n)=m!/[(m-n)!n!]
C(8,3)=8!/(5!3!)
C(10,3)=10!/(7!3!)
C(8,3)/C(10,3)=[8!/(5!3!)]/[10!/(7!3!)]=(8!7!3!)/(10!5!3!)=(7×6)/(10×9)=7/15



177 degrees 41'3 "divided by 3 + 30 degrees 46'19" =?


177 degrees 41'3 "divided by 3 + 30 degrees 46'19"
=177 degrees 39'123 "divided by 3 + 30 degrees 46'19"
=177 degrees divided by 3 + 39 'divided by 3 + 123 "divided by 3 + 30 degrees 46'19"
=59 degrees 13'41 "+ 30 degrees 46'19"
=(59 + 30) degrees + (13 + 46) '(41 + 19) "
=89 degrees 59'60 "
=90 degrees



2.61 divided by 13.75 plus 30.1 divided by 137.5 plus 813 divided by 1375


2.61 divided by 13.75 plus 30.1 divided by 137.5 plus 813 divided by 1375
=261÷1375+301÷1375+813÷1375
=(261+301+813)÷1375
=1375÷1375
=1