Curly213

Hi www.urch.community, i have a question regarding the materials i want to start off my preparation! Is it okay to start with Barrons 11 th edition ( 13 thb edition is already on the market!) , Longman from 2006, official guide 3rd edition and The complete guide from 2006, too..... My question now is if the books are too old or if they still give a good preparation to get over 105, because thats what i need. I would be pleased to see any answer regarding my question ... Thanks in advance

Hi www.urch.community, i have a question regarding the materials i want to start off my preparation! Is it okay to start with Barrons 11 th edition ( 13 thb edition is already on the market!) , Longman from 2006, official guide 3rd edition and The complete guide from 2006, too..... My question now is if the books are too old or if they still give a good preparation to get over 105, because thats what i need. I would be pleased to see any answer regarding my question ... Thanks in advance

no it isnt a *n ...the oppsosite of a ^n ....its a and the n is written right beside the a but not in the same height i hope u understand what i mean and this for everything except a ... a down n = a down (n+4) hope anyone could solve this sequence!

but it says without repetition that means u have ´for the first 8 possibilities and for the second 7 for the third 6 and the fourth 5 now i think ive got it =)

iam gettin for the amount / interest ex. 2000 as a solution but not 20000... could u check if the given ans is wrong !

Form a given set of numbers 2, 3, 4, 5, 6, 7, 8 & 9, find the number of ways of forming a four-digited number(without repetition)? is that right 8 C 4 ?? 2)Three men and women are candidates for two vacancies. A selector can choose two candidates. In how many ways can he makes his selection gonna post ans ..soon 3)How many different ways can two books be choosen from ten books, if two particular books are to never be selected??

isnt question 2 ...288??? my way 8(100 digits) * 9(tenths digit) * 4=288 because in the 100 digits u re not allowed to have 5 and O.. tenths digit only 5 and ones digit odd numbers without 5 .. let me know if iam right!

Three men and women are candidates for two vacancies. A selector can choose two candidates. In how many ways can he makes his selection WHERE did u get the two women from...???? after recognizing two women u could calculate it ..5C2 = 10 The probability that A hits a target is ¼ and the probability that B doesn’t hit target is 3/5. What is the probability that A or B successfully hit the target. what am i doin wrong ..i thought either probs.. u have to add.. so my sugg. was 1/4 + 2/5 = 13/20.. could s.o explain this exercices to me=)

youre right ..thx kronos

ur way to solve it is right but iam not sure about ur ans if it is right... because iam lookin at the two winners and iam countin 11 votes so its 11/20 times 100 is 55 percent ..let me kno if iam wrong...

if 24 carat = 100 percent ..then 20 should be 5/6 i dont know why they ve written down 5/8 makes no sense for me=)

that was my thought too paul without that assumption its impossible to solve...ure right=)

It is 9/10 Dont get confused barrons ans is right this is the way to solve it Q) 24 carat gold is pure gold. 18 carat gold is 3/4 gold 20 carat gold is 5/8 gold What is the ratio of pure gold in 18 carat to pure gold in 20 carat gold? So the ratio of the 18 carat gold is to the pure gold is 18/24 = 3/4 th ratio of the 20 carat gold to the pure gold is 20/24= 5/6 hence they wanna know the ratio of pure gold in 8 carat to pure gold in 20 carat u have to calculate it like this... (3/4) : (5/6) = (3/4)*(6/5) =18/20= 9/10 3/4)

since area is 1/2 * b * h.... hence u could solve it like this 1/2 * (8-2) *h=15 h=5 H = Y hence C Could u post the official answer , please=)

In a box of 10 electrical parts, 2 are defective. If 2 parts are randomly chosen, without replacement, what is probability that both are defective?

iam gettin a gain loss value of -7000 if hes only takin the absolute value ..then its bigger ...hence B

Help with theses PP exercices! 1)S is the set of all integers from 1 to 48 inklusive. V is the sum of all the even integers in S. D is te sum of all the odd integers in S. CA: V CB: D+ 23 2)The reflection of a positive integer is obtained by reversing its digits. For example 321 is the reflexion of 123. The difference between a five digit integer and its reflection must be divisble by which of the following? A)2 B)4 C)5 D)6 E)9 3) CA:100,210 times 90021 CB: 100,021 times 90210 4)Let a1, a2 , a3 .... an ... be a sequence of positve numbers where a1 =1 and for n >= 1 , a(n+1)= a (n+4) Which of the following represents the nth term of the sequence ? A) 4 n - 3 B) 4n -1 C)4n D)4n + 1 E)4n +4 5 ) Seven one dollar bills are to be distributed among Lucia, Gomez and DOmingo so that each person recievest at least 1 Dollar. Ca: The number of ways to distribute the bills so that at least one person receives at least 3 Dollars. CB:The total number of ways to distribute the bills 6) A circular flower bed of radius r feet is surrounded by a circular walk of width (r/2 ) feet. CA: The area of the flower CB: The area of the walk ans are 1)A 2)9 3)B 4)A 5)C 6)B Would be nice if s.o. could solve the other exercices... thx to 12rk34 for solving Q2, 6 ! WOuld be nice if s.o could solve these exercices in a fast and easy way... thx in advance ..gonna post the ans. later =)

1)S is the set of all integers from 1 to 48 inklusive. V is the sum of all the even integers in S. D is te sum of all the odd integers in S. CA: V CB: D + 23 2)The reflection of a positive integer is obtained by reversing its digits. For example 321 is the reflexion of 123. The difference between a five digit integer and its reflection must be divisble by which of the following? A)2 B)4 C)5 D)6 E)9 3) CA:100,210 times 90021 CB: 100,021 times 90210 4)Let a1, a2 , a3 .... an ... be a sequence of positve numbers where a1 =1 and for n >= 1 , a(n+1)= a (n+4) Which of the following represents the nth term of the sequence ? A) 4 n - 3 B) 4n -1 C)4n D)4n + 1 E)4n +4 5 ) Seven one dollar bills are to be distributed among Lucia, Gomez and DOmingo so that each person recievest at least 1 Dollar. Ca: The number of ways to distribute the bills so that at least one person receives at least 3 Dollars. CB:The total number of ways to distribute the bills 6) A circular flower bed of radius r feet is surrounded by a circular walk of width (r/2 ) feet. CA: The area of the flower CB: The area of the walk WOuld be nice if s.o could solve this exercices in a fast and easy way... thx in advance ..gonna post the ans. later =)

good work guys the ans is 80 and 10.3 percent thx for the help

yeah i got this too.... 3+3 and the distance between the two points sqrt of 18 which is 3 *sqrt of 2

In a triangle the three angles were given as X, X & Y. If the average of 2 angles is 65, then what is the possible value of Y?? A. 65 B. 75 C. 80 & so on..... If the retail price is 35% more than wholesale price and if the retailer sells it with a profit of 21% with that of wholesale price, then what percentage of discount did he offer to the customer? Iam gonna post the official ans later ... could someone show me how to solve number one exactly... i think number 2 sounds weird..

In a triangle the three angles were given as X, X & Y. If the average of 2 angles is 65, then what is the possible value of Y?? A. 65 B. 75 C. 80 & so on..... If the retail price is 35% more than wholesale price and if the retailer sells it with a profit of 21% with that of wholesale price, then what percentage of discount did he offer to the customer? Iam gonna post the official ans later ... could someone show me how to solve number one exactly... i think number 2 sounds weird..

Hey everybody ... iam so desperate ....had my exam on friday morning and just scored 710 on math ... but i have to get at least 780 to get into the university ...could anyone please give me any advices because iam on time pressure because of the deadlines for the university....Did some exercices and the whole novas and the pp on the first score 720...and the second only 690....Would be very happy if someone could give me some advices to improve q.. to get the knowledge in 2 weeks!

oh, my dear ..thx !

What does cb , mean lol?