Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
95 views
in Aptitude by (102k points)
closed by
Find the Sum of the digits of the smallest number by which 1440 must be multiplied, so that it becomes a perfect cube.  
1. 5
2. 6
3. 8
4. 9

1 Answer

0 votes
by (101k points)
selected by
 
Best answer
Correct Answer - Option 2 : 6

Calculation:

1440 = 2 × 2 × 2 × 2 × 2 × 3 × 3 × 5

1440 = 25 × 3× 5 

To make it a perfect cube it should be multiplied by 2 × 3 × 5 × 5 = 150

sum of digits of 150 = 1 + 5 + 0 = 6

 

 

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...