`3.3+13.33+31.13+13.31+1.3=`

13^3-13^2=

Find the mode of the given data : 3.1, 3.2, 3.3, 2.1, 1.3, 3.3, 3.1

3√(1.331)^4/(1.331)^3 + 3√(1.331)/(13.31) = ?

What will come in place of question mark (?) in the following questions ? 13.31 + 33.321 - 241.11 = ?

3, 7, 13, 21, 31, ….

arrange the following in decreasing order : (desecending order) 13*3, 11*3, 1*33, 2*31

Show that the three lines with direction cosines 12/13, -3/13, -4/13, 4/13, 12/13, 3/13, 3/13, -4/13, 12/13 are mutually perpendicular.

3/13+7/13+1/13