4056: A rectangular sump of dimensions 6 m x 5 m x 4 m is to be built by using bricks to make the outer dimension 6.2 m x 5.2 x 4.2 m. Approximately how many bricks of size 20 cm x 10 cm x 5 cm are required to build the sump for storing water ?
(a) 1500
(b) 3000
(c) 15000
(d) 30000
4057: H1N1 virus is sometimes mentioned in the news with reference to which one of the following diseases?
(a) AIDS
(b) Bird flu
(c) Dengue
(d) Swine flu
4058: In a group of six women there are four table tennis players, four post-graduates in Economics, one post-graduate in Commerce and three bank employees. Vimala and Kamala are among the bank employees while Amala and Komala are unemployed. Komala and Nirmala are among the table tennis players. Amala, Kamala, Komala and Nirmala are postgraduates in Economics of whom two are bank employees. If Shyamala is a postgraduate in Commerce who among the following is both a table tennis player and a bank employee?
(a) Nirmala
(b) Shyamala
(c) Amala
(d) Komala
4059: Two numbers X and Y are respectively 20% and 28% less than a third number Z. By what percentage is the number Y less than the number X ?
(A) 8%
(B) 9%
(C) 10%
(D) 12%
4060: A small weight put on the pressure cooker increases the pressure of steam because:
(a) It is air tight
(b) Area of contact is very small
(c) Density of metal is very high
(d) Pressure builds up irrespective of the weight placed