Question

find the number of terms divisible by 8 between 200 and 600...??? Will we include 200 and 600
in it ? as they both are divisible by 8?? help me fast!!!!

Answer 1

Since here the term between is used so we won't include 200 and 600
AP -> 208, 216, 224 ..................... 592
Here, 
a = 208   d = 6   
an = 592
=> a + (n-1)d = 592
=> 208 + (n - 1)6 = 592
=> 6n - 6 = 592 - 208
=>6n = 384 + 6
=> n = 390 / 6
=> n = 65
Therefore, there 65 terms which are divisible by 8 and is between 200 and 600

Answer 2

Answer:

Step-by-step explanation:

AP -> 208, 216, 224 ..................... 592

Here,  

a = 208   d = 6    

an = 592

=> a + (n-1)d = 592

=> 208 + (n - 1)6 = 592

=> 6n - 6 = 592 - 208

=>6n = 384 + 6

=> n = 390 / 6

=> n = 65

Therefore, there 65 terms which are divisible by 8 and is between 200 and 600