Question

what is this answer ​

Answer 1

Answer:

Three Series objects stores the marks of 10 students in three terms. Roll no’s of students form the index of these Series objects. The three series objects have the same indexes. Calculate the total weighted marks obtained by students as per following formula: Finalmarks=25% term1+ 25% term2+50%term3 Store the final marks in another series object.

Answer 2

here

a=13

also d=11

we know

Tn=a+(n-1)d

2021=13+(n-1)11

2021=13+11n-11

2021=13-11+11n

2021=2+11n

11n=2021-2

11n=2019

n=2019/11

n=183.54

as we know n can't have negative places, therefore 2021 isn't a term of the given A.P