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
The 2nd term of a geometric progression is 3 and the 5th term is 81. Find the first term and the common ratio.
Original Khojo Papers practice question — not from a past board paper.
Answer
a = 1 and r = 3
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Dividing ar4 = 81 by ar = 3 gives r3 = 27, so r = 3 and a = 3 ÷ 3 = 1.
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