I hope this helps you
A) 0 natural number
B) 4 square root of 4=4.2=8 whole number
C) 4 whole number
D) square root of 3 irrational number
Answer:
OPTION B: 162, 486, 1458
Step-by-step explanation:
The given sequence is 2, 6, 18, 54, . . .
It is a geometric sequence and the common difference is 3.
The general form of a geometric sequence is: a, ar, ar², ar³, . . .
Here a = 2 and r = 3.
term of a Geometric progression is
.
Note that the fourth term is 54.
i.e., 
.
Similarly,
.
Also,
.
Hence, OPTION B is the answer.
N=25 because 20 divided by 4 is 5 which is 1/5 of n meaning 5x5 is 25