Question

How many natural number arw ther between 43and200 which are exactly divisible by6?

Answer 1

by arithmetic progression

tn=192 t=a=48 difference (d) =6

by formula

tn=a+(n-1) ×d

put the value

192=48+(n-1) ×6

(n-1) ×6=192-48

(n-1) ×6=144

n-1=144/6

n-1=24

n=24+1

n=25

therefore, 25 number is exactly divisible by 6