Find the missing letter:

• H

• L

• Z

• Y

A student observes the movement of four snails and plots the graphs of distance moved as a function of time as given in figures (A), (B), (C) and (D).

Which of the following is NOT correct?

• Graph A

• Graph B

• Graph C

• Graph D

143.

Suppose a person A is at the North-East corner of a square (see the figure below). From that point he moves along the diagonal and after covering 1/3^rd portion of the diagonal, he goes to his left and after sometime he stops, rotates 90° clockwise and moves straight. After a few minutes he stops, rotates 180° anticlockwise. Towards which direction he is facing now?

• North-East   

• North-West

• South-East

• South-West

In a sequence {a_n} every term is equal to the sum of all its previous terms.

If a₀ = 3, then lim_{n → ∞} a_n+1/ a_n is

• 3

• 2

• 1

• E

A rectangular sheet ABCD is folded in such a way that vertex A meets vertex C, thereby forming a line PQ. Assuming AB = 3 and BC = 4, find PQ. Note that AP = PC and AQ = QC.

• 13/ 4

• 15/ 4

• 17/ 4

• 19/ 4