What statement best describe pseudoscience

In numbering carbon atoms in the parent chain of a hydrocarbon, why would you number from right to left, rather than left to right

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

What is the ima of the 1 st class lever in the graphic given? 2 3 0.5