Number Sense (IMO Mathematics Olympiad Class 3): Questions 18  24 of 78
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Question number: 18
» Number Sense
Question
Madhuri wrote a number on the black board as shown below.
If it is formed from three different digits, then which of the following number could be placed in the gap to make it the biggest number?
Choices
Choice (4)  Response  

a.  0 

b.  9 

c.  5 

d.  8 

Question number: 19
» Number Sense
Question
The smallest fivedigit number that can be formed using 9, 5, 4, 2, 8 without repeating the digits is ________.
Choices
Choice (4)  Response  

a.  45892 

b.  24589 

c.  85429 

d.  52489 

Passage
Sonia is playing with some number cards. She made a deck of these cards and pulled the cards as shown below.
Her mother asked some question based on these cards. Help her to find the answers.
Question number: 20 (1 of 3 Based on Passage) Show Passage
» Number Sense
Question
Which is the largest possible fourdigit number?
Choices
Choice (4)  Response  

a.  9562 

b.  8652 

c.  9652 

d.  8562 

Question number: 21 (2 of 3 Based on Passage) Show Passage
» Number Sense
Question
The number lying between 500 and 600 which has 8 as tens digit that can be formed using the numbers on the cards is ________.
Choices
Choice (4)  Response  

a.  658 

b.  568 

c.  582 

d.  All of the above 

Question number: 22 (3 of 3 Based on Passage) Show Passage
» Number Sense
Question
Which is the smallest possible four digit number?
Choices
Choice (4)  Response  

a.  2568 

b.  2586 

c.  2856 

d.  5628 

Question number: 23
» Number Sense
Question
Which symbol should be written in the box below to make the given number sentence true?
Choices
Choice (4)  Response  

a. 


b.  < 

c.  = 

d.  > 

Question number: 24
» Number Sense
Question
Which of the following pairs is incorrectly matched?
Choices
Choice (4)  Response  

a.  One hundred fifty one 151 

b.  Seven hundred twenty 720 

c.  Five hundred twenty two522 

d.  Eight hundred twenty822 
