Question

Which number cames after in an sequence 1,2,6,15,31​

Answer 1

Answer:

Step-by-step explanation:

You might find that difference of the first two digit no.s are when taken are

1,4,9,16

Again difference would give

3,5,7

So next no.would be by series 56

Answer 2

Answer:56

Step-by-step explanation:

sequence=1,2,6,15,31

a2-a1=2-1=1    =$1^{2}$

a3-a2=6-2=4  =$2^{2}$

a4-a3=15-6=9 =$3^{2}$

a5-a4=31-15=16=$4^{2}$

a6-a5=x-31       =$5^{2}$

therefore

25=x-31

25+31=x

x=56