Let be an Arithmetic Progression such that is equal to _____ :
JEE Mathematics 2025 Question with Solution
Answer
Correct answer:11132
Step-by-step solution
Standard Method
Given: the solution states the relevant sum equals and asks for the required partial sum of the A.P.
Find: The value of .
Using the property of an Arithmetic Progression, sums of terms equidistant from the ends are equal.
Hence,
The extracted solution states that this total leads to the required value
Therefore, the required sum is .
Using AP sum property
Given: An Arithmetic Progression with terms .
Find: The value of .
The solution uses the standard A.P. idea that terms equidistant from the beginning and end have equal pairwise sums:
So the sum of terms is
The provided solution then concludes the final required sum as
So the numerical answer is .
Note: The solution text appears internally inconsistent in its intermediate statements, but its final stated answer is , which is taken as authoritative here.
Common mistakes
Assuming the given expression can be altered without using the exact A.P. sum structure is incorrect. In an Arithmetic Progression, use the sum formula or equal-sum pairing of equidistant terms.
Miscounting the number of equal pairs is a common error. For terms, the number of pairs is , not any other value.
Using the final numerical answer with units or extra words is wrong for a Numerical Value Answer. Enter only the number .
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