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The next two letters are 'O' and 'C'. They are the first letters of the periods and systems in geologic time, from most recent to oldest. Quaternary, Tertiary, Cretaceous, Jur…assic, Triassic, Permian, Pennsylvanian, Mississippian, Devonian, Silurian. The next two are Ordovician and Cambrian. (MORE)

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Your the Number Seven on a telephone key pad. Seven is also the (PQRS) key and it is above the Star key. Your eleven neighbors are 1,2,3,4,5,6,8,9.0,*,#.

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A regular pack wuz about 30 cents! Did u kno that stamps were only 2 cents back then?

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On an ECG, p, q, r, s and t refer to the different spikes on the reading. P represents the depolarisation of the atria of the heart. Q, R and S represent the depolarisation of… the ventricles. T represents the repolarisation of the ventricles. (MORE)

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Prove: [ P -> Q AND R -> S AND (P OR R) ] -> (Q OR S) -> implies, is equivalent, ~ NOT, --- 1. P -> Q ___ hypothesis 2. R -> S ___ hypothesis 3. P OR… R ___ hypothesis 4. ~P OR Q ___ implication from hyp 1. 5. ~R OR S ___ implication from hyp 2 6. ~P OR Q OR S ___ addition to 4. 7. ~R OR Q OR S ___ addition to 5. 8. Let T (Q OR S) ___ substitution 9. (~P OR T) AND (~R OR T) ___ Conjunction 6,7 10. T OR (~P AND ~R) ___ Distribution from 9 11. T OR ~(P OR R) ___ De Morgan's theorem 12. Let M == (P OR R) ___ substitution 13. (T OR ~M) AND M ___ conjunction 11, hyp 3 From there, you can use distribution to get (T AND M) OR (~M AND M). The contradiction goes away leaving you with T AND M, which can simplify to T. (MORE)

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In Word Games

9 P. in the S. S. equals 9 planets in the solar system EDIT: Which is no longer the case, as Pluto has now been classified as a dwarf planet.

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= I live above a star but never burn I have 11 neighbours they dont turn. My initials are P, Q, R and sometimes S Who am i = You are the number 7 on your phone!! hop…e that helped (MORE)

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the 5s because it has better service but it dosent have diffrent colrs just silver gold and black

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A = 2 means that T + 2 = F, which means T = F - 2. And A = 2 also means that 2 + B = Z. This means that 2 + B + P = T. Since this is true, it is also true that 2 + B + P + F =… T + F. And since B + P + F = 24, it is true that 2 + 24 = T + F ,which means T + F = 26. Since F = T + 2, it is true that T + T + 2 = 26. So T = 12. And since Q - T = 7, it is true that Q = 19. (MORE)

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20c + 5 = 5c + 65 Divide through by 5: 4c + 1 = c + 13 Subtract c from both sides: 3c + 1 = 13 Subtract 1 from both sides: 3c = 12 Divide both sides by 3: c = 4