tmua 2019 Q11

tmua · Uk · paper2 1 marks Arithmetic Sequences and Series Properties of AP Terms under Transformation

An arithmetic series has $n$ terms, all of which are integers.
The sum of the series is 20 .
Which of the following statements must be true?
I The first term of the series is even.
II $n$ is even.
III The common difference is even.

..... 13

An arithmetic series has $n$ terms, all of which are integers.

The sum of the series is 20 .

Which of the following statements must be true?

I The first term of the series is even.

II $n$ is even.

III The common difference is even.

Paper Questions

Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 Q19 Q20