Question

#mental ability... ability.....answer@ll please.....also tell how the answer came if possible.


Please!!!!thanku!!

Answer 1

Answer for the first one would be (4)
As you can see, neither of the shapes are overlapping with each other in any way, the answer is (4)

For the second one- I did it in a difficult way, but got a correct answer.
The answer is (2) 105
I did it in an imaginary way, where I imagined 15 people in a line.
The one standing first would shake hands with all of them, that is 14, and get eliminated. 
Then the second one, but his count of shakes would be 13.
Then third, who'd do 12 shakes, and so on. 
Then add it all up, that is 14+13+12+11 to 1, the result is 105.

For the third one, the algebraic expressions were given for confusing you, I think. 
The answer is (2) 35/19
Because 2³= 8
And 3³= 27  [8+27=35]

Divided by 
27-8= 19

Fourth answer is (1) I think, because all the others have 2 odd numbers and one even number, but first option has only even numbers.