Same chapter3 marksDifficulty: Medium
A man saves ₹200 in the first month and ₹50 more in each following month. Find his total saving in one year.
Arithmetic and Geometric Progression
3 marksDifficulty: Medium
Find the sum 1 + 3 + 5 + ... + 99.
Original Khojo Papers practice question — not from a past board paper.
Answer
2500
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
These are the first 50 odd numbers, and the sum of the first n odd numbers is n2. Here n = 50, so the sum is 2500.
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