A single card is chosen at random from a standard deck of 52 playing cards. The probability of choosing either a Queen or a Spade (but not both) is:

$\frac{4}{13}$

The correct answer is Option (4) → $\frac{4}{13}$

• Total cards = 52

• Number of Queens = 4

• Number of Spades = 13

• Queen of Spades is counted in both, so subtract 1.

So, Queen or Spade = 4+13−1 = 16

Probability:16/52 = 4/13​