Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 543 · 40 questions

How to think it through (Test every number): Check each number for a property: even/odd, prime (only two factors), square (4, 9, 16 …), or a multiple of 3, 4, 5 … 9. Find the property that three numbers share and one does not. Make sure no other property points at a different number — then that one is the odd one out.

1. 1.Which number is the odd one out: 71, 89, 17, 45? (a) 71 (b) 89 (c) 17 (d) 45
2. 2.Which number is the odd one out: 81, 9, 27, 58? (a) 81 (b) 9 (c) 27 (d) 58
3. 3.Which number is the odd one out: 99, 20, 80, 32? (a) 99 (b) 20 (c) 80 (d) 32
4. 4.Which number is the odd one out: 23, 47, 25, 97? (a) 23 (b) 47 (c) 25 (d) 97
5. 5.Which number is the odd one out: 10, 83, 89, 53? (a) 10 (b) 83 (c) 89 (d) 53
6. 6.Which number is the odd one out: 42, 53, 61, 73? (a) 42 (b) 53 (c) 61 (d) 73
7. 7.Which number is the odd one out: 65, 75, 85, 42? (a) 65 (b) 75 (c) 85 (d) 42
8. 8.Which number is the odd one out: 71, 35, 73, 29? (a) 71 (b) 35 (c) 73 (d) 29
9. 9.Which number is the odd one out: 17, 31, 18, 3? (a) 17 (b) 31 (c) 18 (d) 3
10. 10.Which number is the odd one out: 37, 20, 83, 5? (a) 37 (b) 20 (c) 83 (d) 5
11. 11.Which number is the odd one out: 89, 34, 23, 71? (a) 89 (b) 34 (c) 23 (d) 71
12. 12.Which number is the odd one out: 88, 98, 48, 96? (a) 88 (b) 98 (c) 48 (d) 96
13. 13.Which number is the odd one out: 53, 50, 95, 23? (a) 53 (b) 50 (c) 95 (d) 23
14. 14.Which number is the odd one out: 42, 3, 31, 59? (a) 42 (b) 3 (c) 31 (d) 59
15. 15.Which number is the odd one out: 71, 53, 11, 99? (a) 71 (b) 53 (c) 11 (d) 99
16. 16.Which number is the odd one out: 43, 15, 72, 5? (a) 43 (b) 15 (c) 72 (d) 5
17. 17.Which number is the odd one out: 26, 67, 11, 83? (a) 26 (b) 67 (c) 11 (d) 83
18. 18.Which number is the odd one out: 79, 37, 45, 17? (a) 79 (b) 37 (c) 45 (d) 17
19. 19.Which number is the odd one out: 18, 27, 54, 93? (a) 18 (b) 27 (c) 54 (d) 93
20. 20.Which number is the odd one out: 78, 44, 54, 18? (a) 78 (b) 44 (c) 54 (d) 18
21. 21.Which number is the odd one out: 55, 95, 36, 45? (a) 55 (b) 95 (c) 36 (d) 45
22. 22.Which number is the odd one out: 37, 11, 83, 90? (a) 37 (b) 11 (c) 83 (d) 90
23. 23.Which number is the odd one out: 2, 28, 23, 79? (a) 2 (b) 28 (c) 23 (d) 79
24. 24.Which number is the odd one out: 67, 42, 13, 79? (a) 67 (b) 42 (c) 13 (d) 79
25. 25.Which number is the odd one out: 73, 13, 61, 65? (a) 73 (b) 13 (c) 61 (d) 65
26. 26.Which number is the odd one out: 61, 47, 97, 15? (a) 61 (b) 47 (c) 97 (d) 15
27. 27.Which number is the odd one out: 11, 2, 40, 71? (a) 11 (b) 2 (c) 40 (d) 71
28. 28.Which number is the odd one out: 24, 36, 72, 48? (a) 24 (b) 36 (c) 72 (d) 48
29. 29.Which number is the odd one out: 97, 17, 76, 2? (a) 97 (b) 17 (c) 76 (d) 2
30. 30.Which number is the odd one out: 34, 43, 19, 47? (a) 34 (b) 43 (c) 19 (d) 47
31. 31.Which number is the odd one out: 58, 23, 2, 11? (a) 58 (b) 23 (c) 2 (d) 11
32. 32.Which number is the odd one out: 29, 11, 92, 2? (a) 29 (b) 11 (c) 92 (d) 2
33. 33.Which number is the odd one out: 52, 71, 59, 2? (a) 52 (b) 71 (c) 59 (d) 2
34. 34.Which number is the odd one out: 79, 35, 59, 29? (a) 79 (b) 35 (c) 59 (d) 29
35. 35.Which number is the odd one out: 3, 11, 83, 39? (a) 3 (b) 11 (c) 83 (d) 39
36. 36.Which number is the odd one out: 63, 53, 43, 7? (a) 63 (b) 53 (c) 43 (d) 7
37. 37.Which number is the odd one out: 37, 4, 29, 19? (a) 37 (b) 4 (c) 29 (d) 19
38. 38.Which number is the odd one out: 17, 98, 53, 83? (a) 17 (b) 98 (c) 53 (d) 83
39. 39.Which number is the odd one out: 59, 70, 7, 17? (a) 59 (b) 70 (c) 7 (d) 17
40. 40.Which number is the odd one out: 97, 43, 8, 67? (a) 97 (b) 43 (c) 8 (d) 67

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