OG 12th Data Sufficiency 161-174

Question 161 – “Beginning in January of last year…”
OG Explanation is fine.

Question 162 – “If n and k are positive integers…”
OG Explanation is fine.

Question 163 – “In a certain business, production index p is directly…”
OG Explanation is fine.

Question 164 – “In the rectangular coordinate system, are the points…”
OG Explanation is fine.
Khan Academy (OG 11th) – Question 140 – Begins at 6:05

Question 165 – “If x is an integer is…”
OG Explanation is fine.
Khan Academy (OG 11th) – Question 142 – Begins at 4:30

Question 166 – “If n is a positive integer…”
OG Explanation is fine.
Khan Academy (OG 11th) – Question 144 – Begins at 6:35

Question 167 – “If n is a positive integer…..tens digit of n”
OG Explanation is fine.

Question 168 – “What is the value of…”
OG Explanation is fine.



Question 169 – “Is n an integer…”
OG Explanation is fine.
Khan Academy (OG 11th) – Question 146 – Begins at 2:35

Question 170 – “If n is a positive integer…”
OG Explanation is fine.
Khan Academy (OG 11th) – Question 147

Question 171 – “What is the tens digit of positive integer x…”
OG Explanation is fine.
Khan Academy (OG 11th) – Question 148 – Begins at 0:00

Question 172 – “If x, y, and z are positive is x minus y….”
OG Explanation is fine.
Khan Academy (OG 11th) – Question 149 – Begins at 2:10

Question 173 – “If arc PQR above is a semicircle…”

Question 174 – “Marcia’s bucket can hold a maximum…”
OG Explanation is okay. For statement 2, 3 liters represents an increase of (1/3) of a half full bucket. Thus, the 3 liters represents one-third of one-half the bucket’s capacity. In algebra this is 3 = (1/3)(1/2)(capacity), solving 3 = (1/6)(capacity), capacity = 18. SUFFICIENT The answer is B.


2 Responses to OG 12th Data Sufficiency 161-174

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