Replace the letters with appropriate digits :1MN`div`3 =MN

Replace the letters with appropriate digits 51 K div 7 = 7L

Replace the letters with appropriate digits :73K div 8=9L.

Replace the blank with an integer to make it a true statement. (-25) div _____ = 1

I : The number of 3 digited numbers that can be formed using the digits 1,2,3,4,5 when repetitions are allowed is 125 . II THE number of 3 letter words using the letters of the word MISTER in which atleast 1 letter is repeated is 196.

The Mn^(3+) ion is unstable solution and undergoes disproportionation to give Mn^(2+),MnO_(2)andH^(+) ion. Write balanced ionic equation for the reaction.

Pick out the correct statement with respect to [Mn(CN)_6]^(3-)

What is the statement for the expression 3mn+5 ?

Factorise the expressions : mn+m+n+1.

For M^(2+)//M and M^(3+)//M^(2+) systems the E^(Theta) values for some metals are as follows: {:(Cr^(2+)//Cr,-0.9V" "Cr^(3)//Cr^(2+),-0.4V),(Mn^(2+)//Mn,-1.2V" "Mn^(3+)//Mn^(2+),+1.5V),(Fe^(2+)//Fe,-0.4" "Fe^(3+)//Fe^(2+),+0.8V):} Use this data to comment upon: (i) the stability of Fe3+ in acid solution as compared to that of Cr3+ or Mn3+ and (ii) the ease with which iron can be oxidised as compared to a similar process for either chromium or manganese metal.