What does below rebus means ?

What do you think with the below Picture ?

Can you find the odd number in the following five choices?

1) 482636
2) 259807
3) 865195
4) 104739
5) 391744

Christina is practising her dance steps along with her friends. In a particular sequence, all of them form a row. At that point, Niharika is standing in the 4th position from either end of the row.
Can you find out how many girls are practising together?

It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shop. What is it?

Forwards I am heavy, backward I am not. What am I?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

Can you name an animal whose killing cannot be performed without spilling your own blood?

Prove that the below maths equation is true.

8 + 8 = 91

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?