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What is the average score on the new GRE?
260
If A die rolled 260 times how many items will it roll 5 or 3?
Assuming a standard unbiased 6-sided die: The probability of 5 or 3 = 2/6 = 1/3 → The expectation when it is rolled 260 times is 260 × 1/3 = 86 2/3 → You would expect to see a 5 or 3 about 87 times when rolling a die 260 times
What is a reasonable estimate for 287-29?
290 - 30 = 260
What is the probability that a randomly chosen number is not divisible by 2 3 or 6?
AnswerThe probability that a randomly chosen [counting] number is not divisible by 2 is (1-1/2) or 0.5. One out of two numbers is divisible by two, so 1-1/2 are not divisible by two.The probability that a randomly chosen [counting] number is not divisible by 3 is (1-1/3) = 2/3.Similarly, the probability that a randomly chosen [counting] number is not divisible by N is (1-1/N).The probability that a random number is not divisible by any of 2, 3 or 6 can be reduced to whether it is divisible by 2 or 3 (since any number divisible by 6 can definitely be divided by both and so it is irrelevant). This probability depends on the range of numbers available. For example, if the range is all whole numbers from 0 to 10 inclusive, the probability is 3/11, because only the integers 1, 5, and 7 in this range are not divisible by 2, 3, or 6. If the range is shortened, say just from 0 to 1, the probability is 1/2.Usually questions of this sort invite you to contemplate what happens as the sampling range gets bigger and bigger. For a very large range (consisting of all integers between two values), about half the numbers are divisible by two and half are not. Of those that are not, only about one third are divisible by 3; the other two-thirds are not. That leaves 2/3 * 1/2 = 1/3 of them all. As already remarked, a number not divisible by two and not divisible by three cannot be divisible by six, so we're done: the limiting probability equals 1/3. (This argument can be made rigorous by showing that the probability differs from 1/3 by an amount that is bounded by the reciprocal of the length of the range from which you are sampling. As the length grows arbitrarily large, its reciprocal goes to zero.)This is an example of the use of the inclusion-exclusion formula, which relates the probabilities of four events A, B, (AandB), and (AorB). It goes like this:P(AorB) = P(A) + P(B) - P(AandB)In this example, A is the event "divisible by 2", and B is the event "divisible by 3".
Is 120 the smallest number divisible by 1 2 3 4 5 and 6?
No, 120 is not the smallest number that is divisible by 1,2,3,4,5 and 6.
Is 4 divisible by 260?
No, 4 is smaller than 260. But 260 is divisible by 4.
What is 260 divisible by?
It is divisible by 2.
Is 3 divisible by 1 260?
Is it divisible
Is 3 divisible by 260?
No.
Determine whether 1 260 is divisible by 2 3 4 5 6 9 10?
The number 1,260 is divisible by 2, 3, 4, 5, 6, 9, and 10.
What is divisible by 130?
1, 2, 5, 10, 13, 26, 65, 130
What numbers are divisible by 260?
All multiples of 260 (which are infinite) including 260, 520, 780, 1040, 1300 . . .
What is the smallest number divisible by 20 and 13?
260
What is evenly divisible by 260?
Just multiply 260 by numbers: 520 (2x), 780 (3x), etc.
What is 260 divided by 10?
26
Is 780 divisible by 3?
Yes, 780 is divisible by 3. You get a whole number. 780/3=260
Can 6 over 260 be simified?
Yes it can.6/260 = 3/130Both the numerator and denominator are divisible by 2.
