Convert 87 degrees to radians in terms of pi

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a seven or king. (b) compute the probability of randomly selecting a seven or king or jack. (c) compute the probability of randomly selecting a queen or spade.

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

2.5 milligrams is equivalent to how many grams