Real Numbers class 10th CBSE- Case study -2

A seminar is being conducted by an Educational Organisation, where the participants will be educators of different subjects. The number ot participants in Hindi, English and Mathematics are 60, 84 and 108 respectively.

1. In each room the same number of participants are to be seated and all of them being in the same subject, hence maximum number participants that can accommodated in each room are

A) 14
B) 12
C) 16
D) 18

... Answer is B)
12.

2. What is the minimum number of rooms required during the event?

A) 11
B) 31
C) 41
D) 21

... Answer is D)
21

3. The LCM of 60, 84 and 108 is

A) 3780
B) 3680
C) 4780
D) 4680

... Answer is A)
3780.

4. The product of HCF and LCM of 60, 84 and 108 is

A) 55360
B) 35360
C) 45500
D) 45360

... Answer is D)
45360

5. 108 can be expressed as a product of its primes as

A) 2^3  3^2 
B) 2^3  3^3
C) 2^2  3^2
D) 2^2  3^3

... Answer is D)
2^2x 3^3.

 For an understanding of this case study, you can watch this video.