Numers And Algebra Flashcards
1
Q
N
A
Whole numbers
Positive
2
Q
Z
A
Integers
Also negative numbers
3
Q
Q
A
Rationals
Recurring Decimals
Fractions
4
Q
R
A
Reals
Pi
Square roots
Non ending decimals
5
Q
Number sets
A
N
Q
Z
R
6
Q
Sequence
A
Successive terms that differ from each other by a fix number d (the common difference)
7
Q
Series
A
A series is obtained by adding all the terms of the sequence
8
Q
Formula nth term
A
Un=U1+(n-1)d
9
Q
Sum of formulae
A
Sn=n/2(U1+(n-1)d
Sn=n/2(U1+Un)
