EC2 unable to ping google.com

We created new VPC that has four subnets, two private and two public.

Private and public will be Mumbai A Mumbai B region.

When I ping google.com from public Mumbai A it is not working. When I ping google.com from Public Mumbai B, result is the same. I tried with two servers on each.

Note: All servers have the same security configuration.

How do we resolve this?

This should be helpful..

https://stackoverflow.com/questions/38690012/aws-vpc-internet-gateway-vs-nat

The private subnets need a path to the outside.