Quantitative comparisons practice phần 1 docx

... answer is C. X = (10 1 + 10 2 + 10 3 + 10 4 + … + 15 0). Y = (2 01 + 202 + 203 + 204 + … + 250). Y – X = (2 01 – 10 1) + (202 – 10 2) + … + (250 – 15 0) = 10 0 + 10 0 + … + 10 0 = 10 0 x 50 = 5,000. And ... born in the same day of the week The best answer is A. A = (1/ 2) (1/ 2) (1/ 2) (1/ 2) = (1/ 2) 4 = 1/ 32. B = (1) (1/ 7) (1/ 7) = 1/ 49, which is smaller than col...

Ngày tải lên: 24/07/2014, 05:20

... digit of 11 5 B: The units’ digit of 5 11 The best answer is B. Column A: 11 by any power is always a number where the units’ digit is 1. Try some numbers: 11 1 = 11 , 11 2 = 12 1 and so ... is B. Rachael spends 1/ 5 + (1/ 3)(4/5), which is (1/ 5 + 4 /15 = 7 /15 ) of her allowance each month. The rest, which is (1 – 1/ 5 - 8 /15 = 4 /15 ) she saves up. 7 /15 > 4...

Ngày tải lên: 24/07/2014, 05:20

... B: 10 4 AI: The sum of three consecutive numbers is 312 The best answer is A. Let x -1, x and x +1 be the three consecutive numbers. We know that x -1 + x + x +1 = 312  3x = 312  x = 10 4. ... with R  2 .  R = 13 . The area of the circle can be easily calculated according to 2 R  . The area = 16 914 . 316 913 2   . 16 9 x 3 = 507 and therefore 16 914 .3 ...

Ngày tải lên: 24/07/2014, 05:20

... 11 out of 12 in percent terms B: 91% The best answer is A. Column A = 12 10 0 ,1 %10 0 12 11  . Stop here. Go to the other column and check if 12 x 91 is greater than 11 00: 12 x 91 = 1, 092 ... 41. A: A + B B: 14 0 AI: A = 20 + 16 + 13 + 11 + 6 + 2 B = 22 + 18 + 13 + 11 + 8 + 4 The best answer is A. Rewrite A and B like this: A = 20 + 16 + 13 + 11 +...

Ngày tải lên: 24/07/2014, 05:20

... expression:   XXX 2 3 2 2 3 2 3 19 1 919 1 919 193 61  . 2/3 = 2X  X = 1/ 3 and therefore column B is greater. 3. A: 12 1 11 15 16 3 1 5 2 X XXX  B: 1 The best answer is C. There ... best answer is C. There is no other way, simplify the expression in column A: 1 15 456 11 11 15 4 3 1 1 21 11 15 16 3 1 5 2 5 2    X X X X X XXX X XXX an...

Ngày tải lên: 24/07/2014, 05:20

... ran 12 minutes. On Monday 14 , Tuesday 16 , Wednesday 18 , Thursday 20 and Friday 16 . Calculate the average for column A: (12 +14 +16 +18 +20)/5 = 16 minutes. Since on Friday he ran exactly 16 days ... B = 1. 4/3 > 1 and therefore column A is greater. Column B = the first is out of 12 and the second pick is out of 11 but the order doesn’t matter and therefore there are...

Ngày tải lên: 24/07/2014, 05:20