Question

answer with solution

Answer 1

answer is 2835. use arithmetic progression

Answer 2

Hey your Answer is here.
Between 10 and 200.
Means 1st no is 14 and last no is 196
In this way this is an AP because difference between two consecutive nos is 7.
so
a=14
d=7
n=?
tn=a+(n-1)d
196=14+(n-1)7
196-14=7n-7
182+7=7n
n=189/7
n=27
sum=n/2{2a+(n-1)d}
=> 27/2{2*14+(27-1)7}
=> 27/2(28+182)
=> 27/2*210
=> 27*105
=> 2835
So the sum of nos lying between 10 and 200 and divisible by 7 is 2835.....
If my answer is correct so plzz mark me as Brainliest....