Patterns Flashcards
1
Q
2
A
last digit is 0,2,4,6 or 8
2
Q
3
A
sum of digits is divisible by 3
3
Q
4
A
two-digit number formed by the last two digits is divisible by 4
4
Q
5
A
last digit is 0 or 5
5
Q
6
A
number is divisible by both 2 and 3
6
Q
8
A
three-digit number formed by the last 3 digits is divisible by 8
7
Q
9
A
sum of digits is divisible by 9
8
Q
10
A
last digit is 0
9
Q
Sum of the First N Odd Natural Numbers
A
(N*N)
10
Q
Sum of the First N Even Natural Numbers
A
(N*N)+N=N(N+1)
11
Q
Sum of an Arithmetic Sequence of Integers
A
N/2(first term + last term); N= amount of numbers/terms in the sequence
