What is the probability of drawing a black card or a card with a letter?
standard deck of 52
a:
4/12
1/2
21/26
17/26

17/26.

Step-by-step explanation:

Prob(Drawing a black card) = 26/52 = 1/2.

Prob(Drawing a card with a letter)

= Prob( Ace, King, Queen or Jack of  either Hearts or Diamonds)

= 8/52.

So the required probability = 26/52 + 8/52

= 34/52

= 17/26.

it would open into a square depending on the type of envelope i’m not sure about the second part

26 is 33.33% of 78

step-by-step explanation:

26 is what percent of 78?

26 is p% of 78

equation: y = p% * x

solving our equation for p

p% = y/x

p% = 26/78

p = 0.3333

convert decimal to percent:

p% = 0.3333 * 100 = 33.33%