How many 2-digit natural numbers are divisible by 4?
Answer & explanation
Correct answer: option 3
The series as follows
12 , 16 , ........... , 96
a = 12 , d = 4 , Last term = 96
Last term = a + ( n - 1 )d
96 = 12 + ( n - 1 )4
84 = ( n - 1 )4
21 = ( n - 1 )
n = 22