Given set
10.5, 15.0, 21.5 

Direction: Read the following information and answer the questions given below it:
Six students A, B, C, D, E and F are sitting in the field. A and B are from Nehru House while the rest belong to Gandhi House. D and F are tall while the others are short. A, C and D are wearing glasses while the others are not.

Which short student of Gandhi House is not wearing glasses?

Shailendra is shorter than Keshav but taller than Rakesh. Madhav is the tallest. Ashish is a little shorter than Keshav and little taller than Shailendra. If they stand in the order of increasing heights, who will be the second ? 

BORE : 10 :: HOTEL : ? 

Pointing towards a girl Rama said that she is only child of my uncle’s father’s only sister’s daughter. Then how is Rama related to that girl?

Select the correct option to replace question mark.
242, 343, 444, 545, ? 

My face from point A walks 100 m. to the North direction, then walks 60 m. to the South then walks 30 m. to the East and reaches at point B. Find distance and direction from point A to point B?

If 5 – 5 =24 and 7 – 7 =48 then find the value of 10 – 10 =?