Verbal Reasoning - Mental Ability Questions

In the following question, select the missing number from the given series.

52, 41, 32, 25, ?, 17

Arrange the following words as per order in the dictionary.

1. Modicum

2. Modal

3. Mode

4. Modifier

Eye : Myopia :: Teeth : ?

A family consists of six members P, Q, R, X, Y and Z. Q is the son of R but R is not mother of Q. P and R are a married couple. Y is the brother of R. X is the daughter of P. Z is the brother of P. How many children does P have ?  

Pointing to a photograph, a woman says, "This man's son's sister is my mother-in-law." How is the woman's husband related to the man in the photograph ? 

Which of the following terms follows the trend of the given list?

AAAAAaA, AAAAaAA, AAAaAAA, AAaAAAA, AaAAAAA, _______________.

One morning after sunrise Nivedita and Niharika were talking to each other face to face at Dalphin crossing. If Niharika's shadow was exactly to the right of Nivedita, Which direction Niharika was facing?

Some mangoes are yellow.
Some tixo are mangoes.

Conclusions:
(i) Some mangoes are green.
(ii) Tixo is a yellow.