How many numbers between 10 and 200 are divisible by 7?
Answers
Answered by
34
It is an arithmetic progression. The formula is nth term=a+(n-1)d.
Now put a=14 d=7 nth term =196
Answered by
48
Answer:
number between 10 and 200 and divisible by 7 are :
14 , 21 , 28 , .................... , 196.
here, a = 14
d = 21-14
= 7
an = 196
an = a + (n-1)d
196 = 14 + (n-1)
196-14 = (n-1)7
182 = (n-1)7
182/7 = (n-1)
26+1 = n
27 = n
now , we will find s27
s27 = 27/2(14+196)
s27 = 27/2*210
= 2835
thankful for seen the answer
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