NUMBER SYSTEM FACTORS MCQ SET 2
1. The sum of even divisors of 4096 is :
(a) 6144
(b) 8190
(c) 8192
(d) 6142
Answer: B
2. The sum of even factors of 1800 is :
(a) 403
(b) 6045
(c) 6448
(d) 5642
Answer: D
3. Consider the number N = 12^6 x 3^8 x 5^3 .
Which of the following statements is/are correct?
1. The number of odd factors of N is 60.
2. The number of even factors of N is 720.
Select the correct answer using the code given below:
(a) Only 1
(b) Only 2
(c) Both 1 and 2
(d) Neither 1 nor 2
Answer: C
4. What is the sum of reciprocal of all factors of number 360.
(a) 2.65
(b) 3.25
(c) 3.48
(d) 4.20
Answer: B
5. Find the product of all factors of 544?
(a) 12
(b) 544^3/2
(c) 558
(d) 544^6
Answer: D
6. Find the product of all factors of 1800?
(a) 1800^18
(b) 1800^8
(c) 900^18
(d) 900^9
Answer: A
7. If 847 x 385 x 675 x 3025 = 3^a x 5^b x 7^c x 11^d , then the value of ab – cd is :
(a) 4
(b) 5
(c) 1
(d) 7
ย Answer: B
8. Find the number of prime factors in the product (30)^5 x (24)^5 .
(a) 45
(b) 35
(c) 10
(d) 30
Answer: B
9. What is the distinct prime factors of the number 26381 ?
(a) 29 , 17 , 37
(b) 31 , 17 , 47
(c) 19 , 37 , 13
(d) 23 , 31 , 37
Answer: D
10. The sum of divisor of 10800 which are perfect square .
(a) 393120
(b) 6240
(c) 5200
(d) 5460
Answer: D
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