Question

if u connect 3 resistors, having values 2ohm, 3ohm, 5ohm in parallel, will the value of total resistance of will be 2ohm or greater than 5ohm or lie between 2ohm and 5oh? EXPLAIN

Answer 1

If u want only WHether the total resistance is less than 2 or less than 5 or more than 5 ohms:  there is a Simple way.

When you connect resistances in parallel, resultant resistance is always smaller than all of them. So it is less than 2 ohms.

Answer 2

$\frac{1}{3}+\frac{1}{2}+\frac{1}{5}=\\ \frac{10}{30}+\frac{15}{30}+\frac{6}{30}=\\ \frac{31}{30}\\\\ R_t=\frac{30}{31} \ \Omega\approx0.97\ \Omega$