271: The average height of 2 students in a class is 115 cm. Ten more students with an average height of 130 cm join them. Therefore, the average height of the group of students now becomes:
(a) 110 cm
(b) 120 cm
(c) 130 cm
(d) 140 cm
272: A man proceeding to the north turns to the right. After some time he takes a turn to the left and again to the left. Then he goes to his right and after some distance again turns towards his right. The direction in which he is now moving is
(a) West
(b) South
(c) North
(d) East
273: In a group of five people K, L and M are ambitious; M, N and R are honest; L, M and N are intelligent and K, N and R are industrious. Among these, neither industrious nor ambitious person(s) would include
(a) K alone
(b) L and R
(c) M and N
(d) None in the group
274: Consider the following specific stages of demographic transition associated with economic development :
1. Low birthrate with low death rate
2. High birthrate with high death rate
3. High birthrate with low death rate
Select the correct order of the above stages using the codes given below :
(a) 1, 2, 3
(b) 2, 1, 3
(c) 2, 3, 1
(d) 3, 2, 1
275: Examine the following statements:
1. Lady's finger is tastier than cabbage
2. Cauliflower is tastier than lady's finger
3. Cabbage is not tastier than peas
The conclusion that can be drawn from these statements is that
(a) Peas are as tasty as lady's finger
(b) Peas are as tasty as cauliflower and lady's finger
(c) Cabbage is the least tasty of the four vegetables
(d) Cauliflower is tastier than cabbage