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Is Practice exam 1 and 2 are available for GMAT FOCUS as well?

right-triangle-pqr-is-to-be-constructed-in-the-xy-plane-so-71597.html is this sort of question in our scope?

Yes. Out of scope for the focus edition

Can anyone help me with this question? It’s from the official focus book for this year Not understanding why for S they used even numbers to form their sequence Also how did they get that average?

How is the sequence even for S ?

see the difference will always be 2 in consecutive odd/even integers like take example of series 1, 3, 5, 7, 9 so the difference will always be 2

Ah that makes sense thank you, and how did they get 90 and 20 for the fractions? When Solving the averages

use Arithmetic progression. formula taking 2 common so sequence will become (1+2+3+...+9) similarly for 20

This question is discussed in detail here: list-s-consists-of-10-consecutive-odd-integers-and-list-t-consists-of-166833.html List S consists of 10 consecutive odd integers, and list T consists of 5 consecutive even integers. If the least integer in S is 7 more than the least integer in T, how much greater is the average (arithmetic mean) of the integers in S than the average of the integers in T? (A) 2 (B) 7 (C) 8 (D) 12 (E) 22 For any evenly spaced set median = mean = the average of the first and the last terms. So the mean of S will be the average of the first and the last terms: mean = (x + x + 9*2)/2 = x+9, where x is the first term; The mean of T will simply be the median or the third term: mean = (x - 7) + 2*2 = x - 3; The difference will be (x + 9) - (x - 3) = 12. Answer: D.

Ah I see, thank you guys! Also still getting the hang of the app haha

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