Patterns

Question 1

2

Answer 1

last digit is 0,2,4,6 or 8

Question 2

3

Answer 2

sum of digits is divisible by 3

Question 3

4

Answer 3

two-digit number formed by the last two digits is divisible by 4

Question 4

5

Answer 4

last digit is 0 or 5

Question 5

6

Answer 5

number is divisible by both 2 and 3

Question 6

8

Answer 6

three-digit number formed by the last 3 digits is divisible by 8

Question 7

9

Answer 7

sum of digits is divisible by 9

Question 8

10

Answer 8

last digit is 0

Question 9

Sum of the First N Odd Natural Numbers

Answer 9

(N*N)

Question 10

Sum of the First N Even Natural Numbers

Answer 10

(N*N)+N=N(N+1)

Question 11

Sum of an Arithmetic Sequence of Integers

Answer 11

N/2(first term + last term); N= amount of numbers/terms in the sequence