Question

How many natural numbers are there between 43 and 200 which are exactly divisible by 6?

Answer 1

the numbers are
48, 54, 60 ...........198

this is in Arithmetic progression , so
a = 48
d = 6
Tn = 198
n = ?

Tn = a+(n-1)d

198 = 48+(n-1)6

198-48 = 6n - 6

150 = 6n - 6

150+6 = 6n

156/6 = n

26 = n

so there are 26 natural numbers between 43 and 200