Answer:
1183
Step-by-step explanation:
Common difference:
d = 31 - 15 = 16
nth term:

Here, 


Answer:
6.37%
Step-by-step explanation:
A deck of cards have 52 cards. There are 4 suits of 13 card each, those suits are Hearts, Clubs, Diamond and Spades.
The probability that the first card is a heart is:

Now, the probabily that the second card is a diamond is:

The Probability that the first card is a heart and the second one a diamond is given by:
×

%
(-4/5) / 3 =
-4/5 * 1/3 =
-4/15 mile per minute