Question

complete the pattern and find the rule. 1,3,6,10,15

Answer 1

Respuesta:

+2 +3 +4 +5

Explicación paso a paso:

one is added to the previous number

1+2=3

3+3=6

6+4=10

10+5=15

do you understand??

Answer 2

then 21,28,36,45

You must add 1+2=3, 3+3=6,

6+4=10, 10+5=15, 15+6=21...