Directions: Answer the questions based on the series given below.
There is a cube in which one pair of adjacent faces is painted Blue, the second pair of adjacent faces is painted Pink and the third pair of adjacent faces is painted Black. This cube is now cut into 125 smaller but identical cubes.
How many cubes are not painted blue at all?
60
70
80
90
Total number of small cubes = 125 = 5^3
Number of small cubes are divided as 25 × 5 i.e. 25 cubes per face.
Two adjacent faces are painted Blue. Each face has 25 cubes.
However, the 5 cubes that lie on the edge of the adjacent Blue faces are common to both the Blue faces.
Total number of cubes that are painted Blue = 25 + 25 - 5 = 45
Number of small cubes with no Blue paint at all = 125 - 45 = 80
Hence, option c is the answer
Nine litres are drawn from a cask full of water and it is then filled with milk, Nine litres of mixture are drawn and the cask is again filled with milk, The quantity of water now left in the cask to that of the milk in it is 16 : 9. How much does the cask hold?
Science & Technology · Easy
Sustainable development requires which of the following? 1. Preservation of ecological resources and greater use of renewable resources. 2. Encouragement to the use of environmentally-safe technologies for development purposes. 3. Formulation and implementation of policy framework for people-security and human justice, including ecological and economic security. Select the correct answer using the code given below:
Science & Technology · Easy
Consider the following statements about the Cabinet Mission: 1. Stafford Cripps was the Chairman of the Mission. 2. It supported the cause of Pakistan’s independence. 3. It recommended that provinces will have residuary powers. Which of the statements given above is/are not correct?
Science & Technology · Easy
The identity platform 'Aadhaar' provides open "Application Programming Interfaces (APIs)". What does it imply ? 1. It can be integrated into any electronic device. 2. Online authentication using iris is possible. Which of the statements given above is/ are correct ?
Science & Technology · Easy