What is wrong in the below Picture?

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

What number do you get when you multiply all of the numbers on a telephone's number pad?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

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?

What does this simple rebus mean?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

Spot 5 differences in two Christmas tree below:

You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?