Which of the following relations is true?

Seven balls are drawn simultaneously from a bag containing $5$ white and $6$ green balls. The probability of drawing $3$ white and $4$ green balls is:

$A$ $p-n$ photodiode is made of a material with a band gap of $2.0\, eV$. The minimum frequency of the radiation that can be absorbed by the material is nearly

If in a regular polygon,the number of diagonals is $54$,then the number of sides of the polygon is:

If a body is projected with an angle $\theta$ to the horizontal,then

Which of the following vitamins is water-soluble?