ICSE Class 6 Mathematics - Playing with Numbers - Test 4 (Expert)
1. What is the HCF of 36 and 54?
A. 9
B. 18
C. 27
2. What is the LCM of 15 and 20?
A. 30
B. 45
C. 60
3. What is the prime factorization of 84?
A. 2 x 2 x 3 x 7
B. 4 x 21
C. 2 x 6 x 7
4. Which number is divisible by 12?
A. 426
B. 432
C. 434
5. Which number is divisible by 11?
A. 2,713
B. 2,715
C. 2,717
6. Which number is divisible by 8?
A. 3,416
B. 3,418
C. 3,422
7. Which pair is a pair of twin primes?
A. 27 and 29
B. 29 and 31
C. 33 and 35
8. Which pair is co-prime?
A. 18 and 24
B. 25 and 35
C. 21 and 32
9. What is the least number divisible by both 14 and 21?
A. 42
B. 56
C. 84
10. 40 mangoes and 56 oranges are packed equally in baskets. What is the greatest number of fruits that can be put in each basket?
A. 4
B. 8
C. 16
11. Two bells ring every 9 minutes and 15 minutes. After how many minutes will they ring together again?
A. 30 minutes
B. 60 minutes
C. 45 minutes
12. 48 girls and 64 boys are arranged in equal rows. What is the maximum number of rows possible?
A. 16
B. 24
C. 32
13. Which number is divisible by 6?
A. 527
B. 528
C. 529
14. Which number is divisible by 9?
A. 6,371
B. 6,374
C. 6,372
15. Which number is divisible by 4?
A. 9,128
B. 9,126
C. 9,122
16. What is the prime factorization of 96?
A. 8 x 12
B. 2 x 2 x 2 x 2 x 2 x 3
C. 3 x 32
17. Which is the greatest factor of 72 among the following?
A. 18
B. 12
C. 24
18. Which is a common multiple of 16 and 24?
A. 48
B. 40
C. 36
19. What is the HCF of 66 and 90?
A. 3
B. 6
C. 12
20. What is the LCM of 18 and 24?
A. 48
B. 54
C. 72