Arithmetic Quiz 8

June 23, 2016

Question 1: Which of the following has most number of divisors? 98, 75, 57, 32

(a) 98
(b) 75
(c) 57
(d) 32
(e) None of these

Answer is : 98

 

Question 2: A girl wrote all the numbers from 374 to 645. Then she started counting the number of ones that has been used while writing all these numbers. What is the number that she got?

(a) 99
(b) 48
(c) 101
(d) 57
(e) 67

Answer is : 57

 

Question 3: The LCM of two numbers is 50 and their ratio is 1:10. The two numbers are

(a) 6 and 8
(b) 5 and 50
(c) 7 and 7
(d) 2 and 10
(e) 8 and 5

Answer is : 5 and 50

 

Question 4: The product of 6 consecutive even numbers is always divisible by:

(a) 87958
(b) 36362
(c) 40067
(d) 46080
(e) 63755

Answer is : 46080

 

Question 5: What number should be subtracted from 2.x^3+1.x^2 – 1.x+7, if it is to be perfectly divisible by x+4?

(a) -101
(b) -114
(c) -196
(d) -149
(e) -84

Answer is : -101

 

Question 6: A set has exactly 6 consecutive positive integers starting with 6 . What is the percentage decrease in the average of the numbers when the greatest one of the numbers is removed from the set?

(a) 5.88
(b) 11.65
(c) 16.16
(d) 4.11
(e) 13.64

Answer is : 5.88

 

Question 7: How many natural numbers below 720 are divisible by 8 and 12 but not by 2 ?

(a) 6
(b) 7
(c) 6
(d) 3
(e) 4

Answer is : 4

 

Question 8: Which one of the following is the minimum value of the sum of two integers whose product is 42 ?

(a) 8
(b) 14
(c) 13
(d) 10
(e) 7

Answer is : 13

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