Self Maths Puzzle Numerical Ability

What is the next number in the below series
4,7,15,31,35,19,11, ?

Read Solution (Total 3)

Self Other Question

17, 27, 44, 64, 108, 138, .....
A man is 40 year old at present while his dad is 68. Find out how many year ago he was one third of his father.