Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 201 · 40 questions

Thinking tip (Enough facts, then decide): Not enough evidence: “One mango was sour, so all are sour.” Enough: “We checked all 40 mangoes; every one was ripe.” Before you answer, check every fact you need is given. 7 rows with 9 in each → 7 × 9 = 63. “A box has 9 in each row” with no number of rows → not enough info. Missing facts hide in words like “and a bag”, “older” (by how much?) and “a long film” (how long?).

1. 1.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to change answers (d) to waste time
2. 2.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) no, check more (c) no mango is sweet (d) yes, it is certain
3. 3.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
4. 4.🧩 A box has 7 rows of apples, with 9 in each row. How many apples are in the box? (a) 16 (b) 63 (c) 72 (d) not enough info
5. 5.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a rumour (d) a guess
6. 6.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
7. 7.🧩 Diya bought 5 pens for ₹125 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹125 (c) ₹25 (d) ₹30
8. 8.🧩 Vihaan is 10 years old. Ananya is older than Vihaan. How old is Ananya? (a) 12 (b) not enough info (c) 15 (d) 11
9. 9.🧩 A box has 3 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) not enough info (b) 10 (c) 28 (d) 21
10. 10.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
11. 11.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
12. 12.🧩 Vihaan is 10 years old. Arjun is 9 years older than Vihaan. How old is Arjun? (a) 19 (b) 20 (c) 9 (d) not enough info
13. 13.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
14. 14.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
15. 15.🧩 Kabir bought 5 mangoes for ₹250 in all. Each mango cost the same. What did one mango cost? (a) ₹55 (b) ₹250 (c) not enough info (d) ₹50
16. 16.🧩 A box of eggs has 6 in each row. How many eggs are in the box? (a) not enough info (b) 60 (c) 12 (d) 6
17. 17.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
18. 18.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
19. 19.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) not enough info (b) 10 PM (c) 6 PM (d) 9 PM
20. 20.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 4 PM (c) 2 PM (d) not enough info
21. 21.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 3 PM
22. 22.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
23. 23.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 2 PM
24. 24.🧩 A box has 8 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 45 (b) not enough info (c) 13 (d) 40
25. 25.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
26. 26.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 9 PM (d) 8 PM
27. 27.🧩 Ishaan is 10 years old. Meera is 8 years older than Ishaan. How old is Meera? (a) not enough info (b) 18 (c) 8 (d) 19
28. 28.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) 7 PM (d) not enough info
29. 29.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 6 PM (c) not enough info (d) 3 PM
30. 30.🧩 Saanvi is 6 years old. Tara is older than Saanvi. How old is Tara? (a) 11 (b) 8 (c) not enough info (d) 7
31. 31.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
32. 32.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 6 PM (c) 7 PM (d) not enough info
33. 33.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 5 (b) 50 (c) not enough info (d) 10
34. 34.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
35. 35.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
36. 36.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
37. 37.🧩 Nisha is 6 years old. Diya is 4 years older than Nisha. How old is Diya? (a) not enough info (b) 11 (c) 4 (d) 10
38. 38.🧩 Nisha is 12 years old. Meera is older than Nisha. How old is Meera? (a) 13 (b) not enough info (c) 17 (d) 14
39. 39.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) not enough info (b) 18 (c) 90 (d) 9
40. 40.🧩 Arjun is 10 years old. Rohan is older than Arjun. How old is Rohan? (a) 15 (b) not enough info (c) 12 (d) 11

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