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Data Sufficiency - Absolute-Beginner Level: core concept mastery Data Sufficiency ABSOLUTE BEGINNER

This skill primer 🌟 worksheet focuses on Data Sufficiency - a key topic in Family Tree. You'll solve 20 absolute-beginner-level problems (Worksheet 1 of 10). The primary focus is on core concept mastery. Master data sufficiency problems, data sufficiency reasoning questions, and data sufficiency practice through systematic practice.

📝 Worksheet 1 of 10 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Absolute Beginner level

What you'll learn in this worksheet:
Your progress through Data Sufficiency
Worksheet 1 of 10 (0% complete)

Question 1

Is Chen a sibling of Marie? (1) Chen is child of David. (2) Marie is child of David.
Together they confirm Chen and Marie share parent David, making them siblings. Neither statement alone is sufficient because each only gives info about one person.

Question 2

Is Chen a sibling of Hiroshi? (1) Chen is child of Lucas. (2) Hiroshi is child of Lucas.
Together they confirm Chen and Hiroshi share parent Lucas, making them siblings. Neither statement alone is sufficient because each only gives info about one person.

Question 3

Is Harper a sibling of Sophia? (1) Harper is child of Logan. (2) Sophia is child of Logan.
Together they confirm Harper and Sophia share parent Logan, making them siblings. Neither statement alone is sufficient because each only gives info about one person.

Question 4

Is John the brother of Ethan? (1) John is male and child of Manish. (2) Ethan is child of Manish.
Statement 1 tells us John is male and child of Manish. Statement 2 tells us Ethan is child of Manish. Together they confirm John and Ethan share parent Manish and John is male, so John is the brother of Ethan.

Question 5

Is Omar the brother of Raj? (1) Omar is male and child of Nitin. (2) Raj is child of Nitin.
Statement 1 tells us Omar is male and child of Nitin. Statement 2 tells us Raj is child of Nitin. Together they confirm Omar and Raj share parent Nitin and Omar is male, so Omar is the brother of Raj.

Question 6

Is Ivan the brother of Arjun? (1) Ivan is male and child of Linda. (2) Arjun is child of Linda.
Statement 1 tells us Ivan is male and child of Linda. Statement 2 tells us Arjun is child of Linda. Together they confirm Ivan and Arjun share parent Linda and Ivan is male, so Ivan is the brother of Arjun.

Question 7

Is Kwame a sibling of Mia? (1) Kwame is child of Dev. (2) Mia is child of Dev.
Together they confirm Kwame and Mia share parent Dev, making them siblings. Neither statement alone is sufficient because each only gives info about one person.

Question 8

Is Zara a sibling of Priya? (1) Zara is child of Rohit. (2) Priya is child of Rohit.
Together they confirm Zara and Priya share parent Rohit, making them siblings. Neither statement alone is sufficient because each only gives info about one person.

Question 9

Is Sachin the brother of Amelia? (1) Sachin is male and child of Kwame. (2) Amelia is child of Kwame.
Statement 1 tells us Sachin is male and child of Kwame. Statement 2 tells us Amelia is child of Kwame. Together they confirm Sachin and Amelia share parent Kwame and Sachin is male, so Sachin is the brother of Amelia.

Question 10

Is Mei the sister of Giulia? (1) Mei is female and child of John. (2) Giulia is child of John.
Statement 1 tells us Mei is female and child of John. Statement 2 tells us Giulia is child of John. Together they confirm Mei and Giulia share parent John and Mei is female, so Mei is the sister of Giulia.

Question 11

Is Harper a sibling of James? (1) Harper is child of Hiroshi. (2) James is child of Hiroshi.
Together they confirm Harper and James share parent Hiroshi, making them siblings. Neither statement alone is sufficient because each only gives info about one person.

Question 12

Is Mason the brother of Ama? (1) Mason is male and child of John. (2) Ama is child of John.
Statement 1 tells us Mason is male and child of John. Statement 2 tells us Ama is child of John. Together they confirm Mason and Ama share parent John and Mason is male, so Mason is the brother of Ama.

Question 13

Is Priya the sister of Ivan? (1) Priya is female and child of John. (2) Ivan is child of John.
Statement 1 tells us Priya is female and child of John. Statement 2 tells us Ivan is child of John. Together they confirm Priya and Ivan share parent John and Priya is female, so Priya is the sister of Ivan.

Question 14

Is Harper the sister of Arjun? (1) Harper is female and child of Giulia. (2) Arjun is child of Giulia.
Statement 1 tells us Harper is female and child of Giulia. Statement 2 tells us Arjun is child of Giulia. Together they confirm Harper and Arjun share parent Giulia and Harper is female, so Harper is the sister of Arjun.

Question 15

Is Wei the brother of Evelyn? (1) Wei is male and child of Meera. (2) Evelyn is child of Meera.
Statement 1 tells us Wei is male and child of Meera. Statement 2 tells us Evelyn is child of Meera. Together they confirm Wei and Evelyn share parent Meera and Wei is male, so Wei is the brother of Evelyn.

Question 16

Is Mei the sister of Ethan? (1) Mei is female and child of Kavya. (2) Ethan is child of Kavya.
Statement 1 tells us Mei is female and child of Kavya. Statement 2 tells us Ethan is child of Kavya. Together they confirm Mei and Ethan share parent Kavya and Mei is female, so Mei is the sister of Ethan.

Question 17

Is Raj a sibling of Mateo? (1) Raj is child of Chen. (2) Mateo is child of Chen.
Together they confirm Raj and Mateo share parent Chen, making them siblings. Neither statement alone is sufficient because each only gives info about one person.

Question 18

Is Rohit the brother of Kwame? (1) Rohit is male and child of Noah. (2) Kwame is child of Noah.
Statement 1 tells us Rohit is male and child of Noah. Statement 2 tells us Kwame is child of Noah. Together they confirm Rohit and Kwame share parent Noah and Rohit is male, so Rohit is the brother of Kwame.

Question 19

Is Jennifer the sister of Yuki? (1) Jennifer is female and child of Leila. (2) Yuki is child of Leila.
Statement 1 tells us Jennifer is female and child of Leila. Statement 2 tells us Yuki is child of Leila. Together they confirm Jennifer and Yuki share parent Leila and Jennifer is female, so Jennifer is the sister of Yuki.

Question 20

Is Evelyn the sister of Grace? (1) Evelyn is female and child of Arjun. (2) Grace is child of Arjun.
Statement 1 tells us Evelyn is female and child of Arjun. Statement 2 tells us Grace is child of Arjun. Together they confirm Evelyn and Grace share parent Arjun and Evelyn is female, so Evelyn is the sister of Grace.
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