Question

Hello ! Pls solve the above sum. Thank you. No spamming. I'll give extra points later on to the one who told everything correct and it's a promise.

Not including 6th one.​

Answer 1

$\sf\huge\bold\pink{Answer:}$

${2}^{2} \times {4}^{ - 1} \times {5}^{ - 1} \\ 4 \times \frac{1}{4 \times 5} \\ = \frac{1}{5}$