Question : 84 Maths books, 90 Physics books, and 120 Chemistry books have to be stacked topicwise. How many books will be there in each stack so that each stack will have the same height too?
Option 1: 12
Option 2: 18
Option 3: 6
Option 4: 21
Correct Answer: 6
Solution : Required number of books in each stack = HCF of the given numbers of the three types of books. Now, 84 = 2 × 2 × 3 × 7, 90 = 2 × 3 × 3 × 5 and 120 = 2 ×2 × 2 × 3 × 5 So, HCF of 84, 90 and 120 = (2 × 3) = 6 Hence, the correct answer is 6.
Application | Eligibility | Selection Process | Result | Cutoff | Admit Card | Preparation Tips
Question : How many metallic spheres, each of diameter 6 cm can be melted to mould into a solid cylinder of diameter 8 cm and height of 18 cm?
Option 1: 6
Option 2: 12
Option 3: 8
Option 4: 10
Question : Directions: Which two numbers should be interchanged to make the given equation correct? 36 × 12 + 48 ÷ 6 –18 = 202
Option 1: 6 and 18
Option 2: 6 and 12
Option 3: 36 and 18
Option 4: 36 and 48
Question : Directions: If 6 A 33 B 11 = 18 and 4 A 18 B 9 = 8, then 3 B 35 A 5 = ?
Option 2: 25
Option 3: 21
Option 4: 18
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile