Question

फाइंड द सम ऑफ ऑल नंबर्स बिटवीन 200 एंड 400 मीटर डिविजिबल बाय 7 ​

Answer 1

Answer:

넝ㅎㅊㄹㅎㅎㅎㅎㅎㅋㄴ여ㅑㄷ헟퍼ㅐㄴㅁ유ㅠㅊㅍ

Answer 2

Answer:

8729

Step-by-step explanation:

First number just after 200, divisible by 7 = 203

Last number just before 400, divisible by 7 = 399

This forms an A.P. with

First term, a = 203

Last term, l = 399

Common Difference, d = 7

l = aₓ = a + (x-1)d = 399

=> 203 + 7x - 7 = 399

=>  7x = 203

=> x = 29

Total no. of terms in A.P. , n = 29

Sum of A.P. = S = $\frac{n}{2} [2a + (n-1)d]$ = $\frac{29}{2} [2(203) + (29-1)7]$ = $\frac{29}{2} [406 + 196]$

=> S =  29 x 602 / 2 = 29 x 301 = 8729

Hope this helps!