MathematicsFactors and Multiples (NSTSE Class 5): Questions 72  78 of 84
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Question number: 72
» Mathematics » Factors and Multiples
Question
Observe the twin primes in the table.
(3, 5)

(7, 11)

(11, 17)

(13, 19)

P

Q

R

S 
Which of the given twin primes are present in the prime factorization of 2805?
Choices
Choice (4)  Response  

a.  P and Q 

b.  Q and S 

c.  P and S 

d.  R and S 

Question number: 73
» Mathematics » Factors and Multiples
Question
Find the greatest 3digit number that is divisible by 5.
Choices
Choice (4)  Response  

a.  480 

b.  315 

c.  783 

d.  246 

Question number: 74
» Mathematics » Factors and Multiples
Question
Study the following.
Which digit in the number is in the hundreds place?
Choices
Choice (4)  Response  

a.  5 

b.  3 

c.  9 

d.  0 

Question number: 75
» Mathematics » Factors and Multiples
Question
What is the sum of the first five multiples of 10?
Choices
Choice (4)  Response  

a.  180 

b.  120 

c.  100 

d.  150 

Question number: 76
» Mathematics » Factors and Multiples
Question
Which of the following are two consecutive prime numbers that differ by 2?
Choices
Choice (4)  Response  

a.  Composite numbers 

b.  Coprimes 

c.  Twin primes 

d.  All of the above 

Question number: 77
» Mathematics » Factors and Multiples
Question
When a number X is added to 6, the sum is divisible by 8. What could the number X be?
Choices
Choice (4)  Response  

a.  34 

b.  41 

c.  39 

d.  12 

Question number: 78
» Mathematics » Factors and Multiples
Question
Identify the numbers which have at least 1 factor other than 1 and itself.
Choices
Choice (4)  Response  

a.  Prime numbers 

b.  Coprime numbers 

c.  Twin numbers 

d.  Composite numbers 
