CAT 2022 Progression Question (Medium)

Question

The average of all 3-digit terms in the arithmetic progression 38, 55, 72, ..., is

Accepted Answer

Solution step-by-step --- Step 1 Given arithmetic progression AP AP First term Common difference We are to find the average of all 3-digit terms in this AP. --- Step 2 Condition for 3-digit terms A term is 3-digit if . nth term formula a_n a n-1 d a_n 38 n-1 cdot 17 --- Step 3 Smallest 3-digit term

CAT 2022

Quantitative

Progression

Medium

The average of all 3-digit terms in the arithmetic progression 38, 55, 72, ..., is

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