Railways PYQCBT 1 2020

RRB NTPC · Question 51

The length, breadth and height of a cuboid are 27 cm, 18 cm and 21 cm respectively. How many cubes of side 3 cm can be cut from the cuboid?

  1. 278

  2. 378

  3. 738

  4. 368

Show answer & explanation

Answer: (B) 378

Explanation

Number of 3 cm cubes = (27/3) × (18/3) × (21/3) = 9 × 6 × 7 = 378.