There are 21 cards numbered 1 to 21.if you pick a card what is the probability that choose an odd number or a two?

1/2
4/7
11/21
44/147

4/7

Step-by-step explanation:

There are 11 odd numbers less than or equal to 21.

There is 1 two.

11 + 1 = 12 ways

12 outcomes/ 21 total outcomes =

4/7

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

what? ?

what type of question is thiss

step-by-step explanation: