Cube and Dice – Railway Reasoning

Total Questions: 24

1. Four different positions of a cube are shown in the figure. Which of the following colours is on the face opposite to the face that has black written on it? [NTPC CBT - I 28/12/2020 (Morning)]

Correct Answer: (b) Orange
Solution:

From the dices 1, 3, 4 we can say,
Opposite face of Yellow will be Purple. ⇒
And from the dices 3, 4 we can say,
Opposite face of Black will not be yellow, blue, pink, or purple.
So, the opposite face of black will be ⇒ Orange.

2. Four friends J, Q, B and Z rolled the dice in alphabetical order. [NTPC CBT - I 19/01/2021 (Morning)]

The scores were.
1st round : 3, 2, 5, 2
2nd round: 1, 5, 1, 4
3rd round: 4, 2, 1, 1
If each point on the dice would get 10 points, who won the maximum points after 3 rounds?

Correct Answer: (c) J
Solution:

J = 2 + 5 + 2 = 9
9 10 = 90 points ×
J won the maximum points after 3 rounds

3. A cube is made by folding the given sheet. In the cube so formed, what would be the letter on the opposite side of the letter A? [NTPC CBT - I 29/01/2021 (Evening)]

Correct Answer: (c) C
Solution:

Opposite of A = C , B = D , F = E

4. Two positions of a cubical block with faces A, B, C, D, E, and F are shown below. When F is at the top, which face will be at the bottom? [NTPC CBT - I 17/02/2021 (Morning)]

Correct Answer: (a) D
Solution:

Opposite of A = C
Opposite of B = E , Opposite of D = F
D will be at the bottom when F is at the top.

5. The following paper cutting is folded along the lines to make a cubical box. Select the correct image of the resulting box from among the options. [NTPC CBT - I 11/03/2021 (Morning)]


Correct Answer: (c)
Solution:

6. Four views of the same paper cube are given. [NTPC CBT - I 31/07/2021 (Morning)]

Which of the following will be the correct unfolded view when this paper cube is opened out (Flattened)?

Correct Answer: (a)
Solution:

By the given dice , 2 is opposite to 5 , 1 is opposite to 3 and 4 is opposite
to 6
So the only possible option is “ a “ .

7. Two different positions of the same dice are shown. Select the number that will be on the face opposite to that of the number 5. [RRB NTPC 30/12/2020 (Evening)]

Correct Answer: (c) 4
Solution:

Here, the face which is showing 3, is common in both the diagrams.
So these are opp. Faces :-
3 → 2, 6 → 1, 4 → 5
we can conclude that the number that will be on the face opposite to that of the number 5 is 4.

8. Three different positions of the same dice are shown. Select the letter that will be on the face opposite to the one having U? [RRB NTPC 20/01/2021 (Evening)]

Correct Answer: (d) P
Solution:

9. Which cube given in the options CANNOT be made using the following sheet? [RRB NTPC 31/01/2021 (Evening)]


Correct Answer: (b)
Solution:

10. Two different positions of the same dice are shown. Select the number of dots that will be on the face opposite to the one with 2 dots. [RRB NTPC 01/02/2021 (Morning)]

Correct Answer: (a) 4
Solution:

Dots - 3, 5 and 4 are the opposite of 3 , 1 and 2