hard · GRE Quant
Among 106 participants in an estuary-restoration study, 48 use service A, 42 use B, and 36 use C. The pairwise overlap counts are 17 for A and B, 13 for A and C, and 13 for B and C; 5 use all three. How many participants use none of the three services?
Sign up free to see the explanation and track your rank →
More GRE Quant practice
- 0 < a < b < 1. Quantity A: dfracab Quantity B: dfraca+1b+1
- Which of the following must be a factor of the integer n if n^2 is divisible by 72?
- The average (arithmetic mean) of 5 distinct positive integers is 30. If the largest of the
- Solve for x: x - 5 = √(x - 3)
- Common information: n is an integer and 2^n = k. Quantity A: 2^n+1 + 2^n+1 Quantity B: 2^n
- A logistics firm reports monthly shipping cost and on-time delivery rate for one lane. The
- A store marks up a product by 20% over its cost, then during a sale discounts the marked p
- A fair six-sided die (faces 1 through 6) is rolled twice, and the two results are recorded