VeritasPrepKarishma wrote:
sam2016 wrote:
How about using the Average*no. of terms formula where the average is found by adding the smallest number and the largest number divided by 2. It worked for this question. My question is will it work for all such types of questions?
Sum of terms = Average * Number of terms
holds for all sets of numbers
Average = (First term + Last term)/2
holds for an Arithmetic Progression only
And do such types of questions always
...
.jpg)
