Find the
sum of all
all three digit
nalural numbers, which are divisible by
and not divisible by 6
3
Answers
Answered by
2
Answer:
What to do we can't understand
PLZ ask the question nicely !!!!!!!!!!!!"
Answered by
0
Answer:
105 , 111,117 ..... 999
a = 105
d= 6
Tn = 999
= a+ ( n- 1 ) d= 999
105 + (n-1) 6= 999
(n-1) 6 = 999-105
(n-1) *6 = 894
(n-1) = 149
n= 150
sn = n[ a + tn ] /2
75*1104
82800 is the answer
Similar questions