Page 346 - Services Selection Board (SSB) Interviews

342 Cubes and Dices
Example 3:

(a) 17 (b) 18 (c) 19 (d) 20
Solution: The above figure we can count by columns method:

Four columns – one cube each
Three columns - two cubes each

Two columns - three cubes each
One Column - Four cubes each
Below the numbers on the cubes represents the total cubes present on the particular column.

4

3 3

2 2 2

1 1 1 1

Hence, the total number of cubes be = (4 × 1) + (2 × 3) + (3 × 2) + (1 × 4) = 4 + 6 + 6 + 4 = 20
Option (d).

1. ConCept AppliCAtor

1.
3.

(a) 10 (b) 11
(c) 12 (d) 13

2.

(a) 84 (b) 64
(c) 48 (d) 50

(a) 20 (b) 25
(c) 15 (d) 30