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Inference


5G technology would enable download speeds of 20 GB/second. The mammoth speed is primarily attributed to the millimeter wave spectrum that requires cellular towers every 500 feet for optimum functioning. However, scientists have raised health concerns about 5G service through the “International EMF Scientist Appeal” – a collective opinion of 215 scientists who have highlighted that the WHO have accepted the IARC (International Agency for Research on Cancer) classification of ELF EMF (Extremely low-frequency electromagnetic field) as a Group 2B carcinogen.  Even though the frequency used in 5G service is 24 gigahertz and above - similar to carcinogens like X-ray, Ultraviolet and gamma radiation, millimeter wave spectrum is non-ionizing with health impact correlated to the duration of the exposure and not on the nature of the radiation.

What can be inferred from the passage above?

a) The IARC has...
b) An increase in ...
c) Ionizing radiations ...
d) The study from the International...

e) Millimeter wave spectrum is ..


GMAT Critical Reasoning InferenceYou’re having lunch with your friend Jane, and you suggest getting hot fudge sundaes for dessert; Jane tells you that she doesn’t eat hot fudge sundaes.  In real life, you could draw several valid inferences from this: she’s lactose intolerant, she has sensitive teeth and so can’t eat frozen desserts, she’s on a diet and trying to avoid sweets, or maybe she just doesn’t like ice cream or hot fudge. 

In real life, those would all be acceptable inferences, because the real-world definition of infer is to do any of the following:

1. to derive by reasoning; conclude or judge from premises or evidence: e.g., They inferred his anger from his heated denial.
2. (of facts, circumstances, statements, etc.) to indicate or involve as a conclusion; lead to.
3. to guess; speculate; surmise.
4. to hint; imply; suggest.

“Infer” is, as you can see, a word with fairly flexible meaning.  We most often use it in day-to-day life to mean “make an educated guess.”  If your friend Jane says she doesn’t eat hot fudge sundaes, you apply your existing knowledge about the possible reasons someone could have for...




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