Join the Most Relevant JEE Main 2025 Test Series & get 99+ percentile! Join Now
Search any question & find its solution
Question: Answered & Verified by Expert
If S=125+224+323+......+242+251, then the value of S900 is equal to
MathematicsSequences and SeriesJEE Main
Solution:
1627 Upvotes Verified Answer
The correct answer is: 3.25
S=r=125r26-r=26r=125r-r=125r2
=26×25×262-25×26×516
=25×26226-513=25×26132×9
S900=134=3.25

Looking for more such questions to practice?

Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.