What is the chemical name of

If × stands for 'addition', ÷ stands for 'subtraction', + stands for 'multiplication' and - stands for 'division', then 31 × 18 ÷ 20 - 5 + 9 = ?

If “+” means “minus”, “×” means “divided by”, “÷” means “plus”, and “-“ means then “multiplied by”

Select the correct combination of mathematical signs that can sequentially replace ‘*’ sign and balance the equation given below.

After interchanging the given two signs, what will be the value of the given equation?

- and X

144 + 216 ÷ 8 - 12 X 175 + 34

51.884 ×  12.91 ×  16.502 =?

Statements:

A < B ≥ C > U = W; R < Q > L ≤ W = Y; Q > P

Conclusions:

I. B < P

II. C > R

After interchanging the given two signs, what will be the value of the given equation? + and ÷

144 ÷ 12 + 36 × 3 - 18

Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.

65 * 45 * 25 * 5 * 35 * 60