Find the missing number in the sequence below:

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

A pet show was happening in my locality. I went down along with my kids. In that show, I noticed that all except two of the entries were cats. All except two were dogs and all except two were Monkeys.

Can you find out how many of each animals were present in that pet show?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

A man died and leaves Rs.10,000 in his will. There are 6 beneficiaries- his 3 sons and their wives. The 3 wives receive Rs.3960 of which Priyanka gets Rs.100 more than Tanu and Neha gets Rs.100 more than Priyanka.
Pramod gets twice as much as his wife, Tushar gets the same as his wife, and Prashant gets 50% more than his wife.

Who is married to whom?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

There were five men at church, and it started raining while they were outside. The four that ran still got wet, but the one that was still stayed completely dry. Why did he stay dry?

Be active and find the killer in the picture Riddle below.