Answer:
yes
Step-by-step explanation:
To evaluate the combination we proceed as follows:
21C3
Given nCk we shall have:
n!/[(n-k)!k!]
thus plugging the values in the expression we get:
21!/[(21-3)!3!]
=21!/(18!×3!)
=1330
Answer: 1330
Answer:
The resistance is decreasing at a rate of 0.36 ohms/minute.
Step-by-step explanation:
The mathematical form of the Ohm's law is given by :
V = IR ...(1)
Where V is voltage, I is current and R is resistance
Given,
I = 5 A
R = 6 ohms
dI/dt = 0.3 A/min
Differentiate equation (1) wrt t:

When V is constant, dV/dt = 0

So, the resistance is decreasing at a rate of 0.36 ohms/minute.
Answer:
a. 256
b. 255
Step-by-step explanation:
If a set has “n” elements, then the number of subset of the given set is
and number of proper subset is
A = {3, 4, 5, 6, 7, 9, 10, 11}
Here, n = 8
No of subsets

No of proper subsets
= 