1) The best way to solve this would not be through using the geometric progression formula. Too tedious. Best way to solve it is through intuition. First number is -1/2, next is 1/4, and then -1/8 and so on and so forth, so essentially when you add the first and second term you get -1/4, so the answ...

Picking numbers would actually be the most efficient strategy in my opinion. You could however reason this out but you have to be wary of this method. First, see that when you add the same thing to both the denominator and the numerator than the fraction will increase in value if the numerator is sm...

The above poster is wrong;

when t = 1

h = -16(1-3)2 + 150 = 214

when t = 0

h = 96 + 150 = 246

so, the question is a little messed up. Because there is nothing that says it will reach a max. height at 3. It could reach it at 1 second.

yes the question is a little vague. So, essentially, for out of every 7, three play football as well? Are these the only people playing football? so if there are 70 rugby players then 30 of them play football as well and 40 play only rugby? And so, if 10% of the people play only rugby, then the peop...

IMO D rule of divisibility for 3 is addition of numbers shud be multiple of 3....thus if ab multiple of 3 implies that a+b multiple of 3 statement 2 proves "a" multiple of 3 and "2b" multiple of 3 since 2 not divisible by 3 implies b divisible by 3... If a divisible by 3 and b d...

The answer should be 60. The answer 10 is very silly. The total number of possibilities = 120 and in half of them, Bob will finish ahead of Marge. So the answer is 60. 10 cannot be the answer because there are 5 different people in 5 different positions.

Okay, so ever number from 1 to 50 will divide h(100) right? But not one of those numbers will divide h(100)+1, because they already divide h(100). So the smallest number that will do so, has to be greater than 50. In the choices given, greater than 40 is the only choice that reflects our solution. S...