Solution
The integers between 200 and 400 divisible by 7 are 203,210...... 399
$$\therefore\ $$Required Sum = 203 + 210 +....+399
$$=7[29+30+.....+57]$$
$$=7[\frac{29}{2}\left(29+57\right)]$$
$$=7[\frac{29}{2}\left(86\right)]$$
$$=7\times29\times43$$
$$=8729$$
Hence, the correct answer is Option D
Get AI Help
Create a FREE account and get:
- Download Maths Shortcuts PDF
- Get 300+ previous papers with solutions PDF
- 500+ Online Tests for Free
Book Free CAT Mentorship
Get personalized CAT strategy from a 99%iler
500+ students mentored
OTP Verification
Enter the 6-digit code sent to your phone
Booking Summary
Session:Free CAT Mentorship
Phone:
Date:
Time:
Enter OTP
Didn't receive the OTP?
