Question

share of world gdp by country (2011)
the single country with the world’s largest gdp is the us
the member countries of the european union have about the same gdp as >
together, these four countries and the european union have > world’s total gdp
the us
japan
india
(the pie chart below: us 21%, european union, china 11%, japan 25%, india 3%, all others 32%)

Explanation:

Step1: Analyze the first blank (single country with largest GDP)

Looking at the pie chart, the US has 21%, Japan 25%? Wait, no, the labels: the pink segment (All others?) Wait, no, the legend: US (blue, 21%), European Union (orange? No, the legend: US (blue), European Union (maybe the 32%? Wait, no, the pie chart labels: 21% (US), 25% (a segment), 11% (China?), 8% (Japan?), 3% (India?), and 32% (All others? No, the first statement: "The single country with the world’s largest GDP is the US" – wait, no, looking at the percentages, the US is 21%, but maybe the other segments: wait, the first blank: the single country with largest GDP. From the pie chart, the US (21%)? Wait, no, maybe the European Union is a group, not a country. So the single country: looking at the segments, China? Wait, no, the first blank is to fill "the US" or another? Wait, the first sentence: "The single country with the world’s largest GDP is [blank]". From the pie chart, the US has 21%, but maybe the other country segments: China (11%), Japan (8%), India (3%). Wait, no, maybe the US is the single country with largest GDP among countries (since EU is a union, not a country). So the first blank: the US.

Step2: Second blank: "The member countries of the European Union have about the same GDP as [blank]". Looking at the pie chart, the EU's share? Wait, the pie chart has a 32% segment? Wait, no, the labels: 21% (US), 25% (a segment), 11% (China), 8% (Japan), 3% (India), and 32% (All others? No, maybe the EU is the 32%? Wait, the second sentence: "The member countries of the European Union have about the same GDP as [blank]". If the EU's share is, say, 21%? No, wait the first blank is "the US", then the second: "The member countries of the European Union have about the same GDP as [blank]". Wait, the pie chart: US is 21%, and maybe the EU is also 21%? Wait, the third sentence: "Together, these four countries (US, Japan, India, China?) and the European Union have [blank] of the world’s total GDP." Wait, let's sum the percentages: US (21%) + EU (let's say 21%) + China (11%) + Japan (8%) + India (3%) = 21+21+11+8+3=64? No, the total should be 100. Wait, the pie chart has segments: 21% (US), 25% (a segment), 11% (China), 8% (Japan), 3% (India), and 32% (All others? No, 21+25+11+8+3+32=100. Wait, maybe the EU is the 25% segment? No, the first blank: the single country with largest GDP. Among countries (US, China, Japan, India), US has 21%, China 11%, Japan 8%, India 3%. So US is the largest single country. Then the second blank: "The member countries of the European Union have about the same GDP as [blank]". If EU's share is 21% (same as US), then the second blank is "the US". Then the third blank: "Together, these four countries (US, Japan, India, China) and the European Union have [blank] of GDP." Wait, US (21%) + EU (21%) + China (11%) + Japan (8%) + India (3%) = 21+21+11+8+3=64? No, maybe the four countries are US, Japan, India, and another? Wait, the pie chart: US (21%), EU (let's say 25%? No, the 25% segment). Wait, maybe the first blank: the US (since it's the largest single country). Second blank: the US (since EU's GDP is same as US). Third blank: sum US (21%) + EU (21%) + China (11%) + Japan (8%) + India (3%) = 64? No, maybe the four countries are US, Japan, India, and China, and EU: 21+21+11+8+3=64? But the total should be, say, 21 (US) + 25 (EU?) + 11 (China) + 8 (Japan) + 3 (India) = 68? Wait, maybe the third blank is "more than half" or a percentage. Wait, the original problem's blanks: first blank: the US; second blank: the US; third blank: a percentage. Wait, the pie chart: US (21%), EU (let's say 21%? No, the 32% is All others? No, the labels: 21% (US), 25% (a segment), 11% (China), 8% (Japan), 3% (India), 32% (All others). Wait, no, maybe the EU is the 25% segment. Then the first blank: the US (21% is the largest single country). Second blank: the EU's GDP is same as US? No, 25% vs 21%. Wait, I think I misread. Let's re-express:

First sentence: "The single country with the world’s largest GDP is the US" (since US is 21%, and other countries: China 11%, Japan 8%, India 3% – so US is largest single country).

Second sentence: "The member countries of the European Union have about the same GDP as the US" (if EU's GDP is 21%, same as US).

Third sentence: "Together, these four countries (US, Japan, India, China) and the European Union have [sum] of GDP." US (21%) + EU (21%) + China (11%) + Japan (8%) + India (3%) = 64%? But maybe the four countries are US, Japan, India, and another, and EU: 21+21+11+8+3=64.

But the main task is to fill the blanks. So first blank: the US; second blank: the US; third blank: a percentage, maybe 64% or similar. But based on the pie chart, the US is 21%, EU maybe 21% (same as US), and sum is 21+21+11+8+3=64.

Answer:

First blank: the US
Second blank: the US
Third blank: 64% (or based on correct sum, but likely the intended answers are the US, the US, and a percentage like 64% or similar)

(Note: The exact numbers depend on the pie chart's accurate labels, but the logical flow is the single country with largest GDP is the US, EU's GDP is same as US, and together they sum to a large percentage.)