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CBSE Questions for Class 6 Maths Playing With Numbers Quiz 10 - MCQExams.com

Find the all the factors of 39 
  • 1,3,13,39
  • 1,3,39
  • 1,3,13
  • 3,13,39
Using the divisibility test, determine which of the following numbers are divisible by 2.
  • 2144
  • 1258
  • 4336
  • 633
  • 1352
Which one of the following is a common factor of 15 and 12.
  • 2
  • 4
  • 5
  • 3
The least number of 4-digits which is exactly divisible by 9 is 
  • 1008
  • 1009
  • 1026
  • 1018
State true(T) or false(F).
The sum of primes cannot be a prime.
  • True
  • False
State true or false:
The product of primes cannot be a prime.
  • True
  • False
State true(T) or false(F).
Odd numbers cannot be composite.
  • True
  • False
Which of the following pairs are always co-primes?
  • Two prime numbers
  • One prime and one composite number
  • Two composite numbers
  • None of the above
State true(T) or false(F).
An even number is composite.
  • True
  • False
State true of false:
If two numbers are co-prime, at least one of them must be a prime number.
  • True
  • False
Choose a perfect number:
  • 16
  • 8
  • 24
  • 28
The least prime is?
  • 1
  • 2
  • 3
  • 5
Which one of the following numbers is divisible by 3?
  • 27326
  • 42356
  • 73545
  • 45326
Which of the following are co-primes?
  • 8,10
  • 9,10
  • 6,8
  • 15,18
Which of the following number is divisible by 4?
  • 8675231
  • 9843212
  • 1234567
  • 543123
The total number of even prime numbers is?
  • 0
  • 1
  • 2
  • Unlimited
Choose the perfect number:
  • 4
  • 12
  • 8
  • None of these
Mark the correct alternative of the following.
Which of the following is a prime number?
  • 263
  • 361
  • 323
  • 324
Which of the following number/s is/are divisible by 6?
  • 7908432
  • 68719402
  • 45982014
  • None of the above
Mark the correct alternative of the following.
Which of the following numbers is prime?
  • 23
  • 51
  • 38
  • 26
Which of the following numbers is divisible by 8?
  • 87653234
  • 78956042
  • 64298602
  • 98741032
Mark the correct alternative of the following.
From the numbers 2,3,4,5,6,7,8,9 how many pairs of co-primes can be formed?
  • 19
  • 18
  • 20
  • 21
Mark the correct alternative of the following.
The smallest number which is neither prime nor composite is?
  • 0
  • 1
  • 2
  • 3
If a and b are two co-primes, then which of the following is/are true?
  • LCM(a, b)=a×b
  • HCF(a, b)=1
  • Both (a) and (b)
  • Neither (a) nor (b)
HCF of 144 and 198 is
  • 9
  • 18
  • 6
  • 12
 Which of the following numbers is divisible by 3?
  • 24357806
  • 35769812
  • 83479560
  • 3336433
Which of the following numbers is divisible by 4?
  • 78653234
  • 98765042
  • 24689602
  • 87941032
 Which of the following number is divisible by 8?
  • 96354142
  • 37450176
  • 57064214
  • none of these
State whether the following statements are true (T) or false (F):
A natural number is called a composite number if it has at least one more factor other than 1 and the number itself. 
  • True
  • False
Which of the following are co-primes?
  • 39,91
  • 161,192
  • 385,462
  • none of these
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