Page 51 - Revised Maths Wisdom Class - 6

Prime Time 49

E Case study Based QuestiOns Case study Based QuestiOns
In a seminar, the number of participants in the art, painting and
craft are 42,63 and 105 respectively. For this minimum number of
rooms required, so that each room has same number of participants
are to be seated and all of them being in the same subject.

Answer the following questions on the basis of above data:
1. Find the number of rooms required for the seminar.
(a) 10 (b) 21 (c) 630 (d) 210
2. Find the number of participants in each rooms.
(a) 10 (b) 21 (c) 630 (d) 210

3. Find the lowest common multiples of number of participant to each subject.
(a) 10 (b) 21 (c) 630 (d) 210

4. What is least possible value of x in 7158x to make it exactly divisible by 6?
(a) 0 (b) 2 (c) 3 (d) 4

F assertiOn-reasOn Based QuestiOns assertiOn-reasOn Based QuestiOns
Directions for Questions 1 to 3: In each of the questions given below, there are two statements marked as
Assertion (A) and Reason (R). Mark your answer as per the codes provided below:

(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false. (d) A is false but R is true.
Q. 1. Assertion (A): Prime factorization of 980 is 2 × 2 × 5 × 7 × 7.

Reason (R): The two numbers which have no common factors other than 1 is called co-prime numbers.
Q. 2. Assertion (A): The number formed by last three digits of 6328 is 328 which is divisible by 8, so 6328 is
also divisible by 8.

Reason (R): A number is divisible by 8, if the number formed by its last two digits is divisible by 8.
Q. 3. Assertion (A): The pairs of primes are (2, 3), (3, 4), (4, 7) are called co-prime numbers.
Reason (R): The two numbers which have no common factors other than 1 are called co-prime numbers.

SUBJECTIVE TYPE QUESTIONS

G sOlve the FOllOWing QuestiOns sOlve the FOllOWing QuestiOns

1. Write all the factors of:
(a) 60 (b) 85 (c) 96 (d) 175

2. Write the multiples of 3 between 71 and 93.
3. Write the smallest even prime number and the smallest odd composite number.
4. Check the divisibility of 130801 by
(a) 5 (b) 10 (c) 2 (d) 4