Same topic2 marksDifficulty: Easy
Find the 15th term of the arithmetic progression 7, 10, 13, …
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Which term of the arithmetic progression 21, 18, 15, … is −81?
Original Khojo Papers practice question — not from a past board paper.
Answer
The 35th term
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
a = 21 and d = −3. Setting a + (n − 1)d = −81 gives 21 − 3(n − 1) = −81, so 3(n − 1) = 102 and n = 35.
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