Here we have Sequence and Series Questions for SEE exam. These are very important questions for secondary education exam students.
What is Arithmetic Sequence?
A sequence is said to be arithmetic sequence if the difference of any term to its preceding term is same throughout the sequence.
Sequence and Series Questions for SEE Exam
According to the latest curriculum of secondary education exam SEE, students have to study arithmetic and geometric series. We will discuss them parallel. Well, first let us discuss on arithmetic progression.
Nth Term of AP
The general term tn = a + (n – 1) d
- a is first term
- d is common difference
- n is number of term
- tn is the nth term or last term.
So you can calculate one variable out of given three variables in the above formula.
It means if you want to calculate first or common difference or number of terms use the same formula.
The number of terms between the first term and the last term is called the mean. If there are three terms, then the middle one is called the mean.
Like in the sequence 5,10,15 10 is the arithmetic mean shortly written as AM.
If a, M, b is in AP then M = a + b upon 2
Sum of n terms in AP
Here is the formula to calculate the sum of n terms in Arithmetic Progression.
Sn= n/2[ 2a + (n – 1) d]
Where the symbols have their usual meaning.
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Thanks for reading this article. Wish you all very best of luck for you upcoming SEE board exam.