Question

How many numbers upto 200 are divisible by 4 and 6 together ?

• A. 14
• B. 16
• C. 18
• D. 20

Answer 1

Answer:

B. 16

The numbers which is divisible by both 4 and 6 is the LCM of 4 and 6 12,24,........ 192/12 = 16 12, 24,...192

$n=\frac{x_n-x_1}{d}+1$

$n=\frac{192-12}{12}+1$

$n=\frac{180}{12}+1$

$n=15+1=16$