DIAS (Delhi Institute for Administrative Services) is India's Best Coaching/Institution for UPSC/IAS/IFoS in Delhi. It is well Known Best Coaching/Institute for UPSC/CSE/IAS/IFoS [Civil Services Examination (CSE) and Indian Forest Service Examinations(IFoS)], run under aegis of DIAS India Edutech Pvt Ltd..DIAS is Best Coaching for IAS/IFoS Maths/Mathematics Optional, and DIAS Maths Optional Mains Test Series is Best Test Series for UPSC IAS/IFoS Maths Optional Test Series and DIAS is also Provide Online Maths Test Series for IAS/IFoS.DIAS is also Best Coaching for UPSC IAS/IFoS Chemistry Optional Coaching for Mains & Best Coaching for UPSC IAS/IFoS Physics Optional Coaching for Mains. DIAS (Delhi Institute for Administrative Services) Address : 18/1,2nd Floor, Old Rajendra Nagar, New Delhi-110060. Contact : 011-65009600 , 9350934622. Mail on : diasindia123@gmail.com Search On : www.diasindia.com