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190124 The general term of the sequence of equal difference numbers is $$a_{n+1}$$=$$a_n$$+4. .$$a_6$$=?
Ready4 It would take one landscaper 45 minutes to mow a lawn and another landscaper 60 minutes to mow the same lawn. How many minutes would it take both landscapers, working simultaneously at their respective constant rates, to mow the lawn?
Magoosh In the infinite sequence 13, 17, 21, 25, 29, . . . , where each term is 4 greater than the previous term, the 46th term is
190603 Now we have to choose 4 teams from 6 teams to go to the game, then how many different selection methods are there?
190207 $$a_1$$=56,$$a_2$$=57,$$a_3$$=59 .$$a_n$$=5n+$$a_{n-3} $$ (n≥4) Which of the following numbers belong to the sequence {$$a_n$$}?
Magoosh Is positive integer n divisible by 4?(1)$$n^2 $$is divisible by 8(2)$$\sqrt{n}$$is an even integer
Magoosh The nth term$$(t_n)$$ of a certain sequence is defined as $$t_n = t_{n-1} + 4$$. If$$ t_1= -7 $$then $$t_{71}$$ =
OG19-数学分册 If $$ x\neq 0$$, what is the value of $$(\frac{x^{p}}{x^{q}})^{4}$$? (1) $$p = q$$ (2) $$x= 3$$
OG12 OG15 OG16 What is the value of n in the equation $$-25 + 19 + n = s$$?(1)$$s = 2$$(2)$$\frac{n}{s} = 4$$
190415 S=S={1,2,3,4,5,11,x}. x is a positive integer. Is ? 1: The median of S is 4. 2: x is larger than or equal to the median.
190113 还原机经选题: 文字题&几何 The equation of a line is dx-by+c=0 (b≠0). What is the slope of the line? (1)b+d = 10 (2)b/d = 4
Ready4

In the coordinate plane, a circle has center (−1, −3) and passes through the point (4, 2). What is the circumference of the circle?
190215 The reminder is 1 when n is divided by 4 and the reminder is 2 when n is divided by 3. Which of the following range might n fall into?
190321
Regular hexagon ABCDEF is inscribed on circle O whose radius is 5. What is the area of the shaded area?
PREP07 Test 2 Does set S contain any even numbers? (1) There are no prime numbers in S. (2) There are no multiples of 4 in S.
PREP07 Test 2 Does the integer k have a factor p such that 1 < p < k ?(1) k > 4!(2) $$13! + 2 \le k \le 13! + 13$$
190124 CD is orthogonal to AD. CD=2. AB=? 1：AC =4 2：AB=BC
191031 A composition is 96 pounds and contains W, X, Y, Z, where W:X:Y = 1:3:4, Y:Z = 5:2. how many pounds Y is？
Ready4

When Jacob closes the drain in his bathtub and turns on the cold water spigot, it takes him 3 minutes and 40 seconds to fill the tub completely. If he fills it from the hot water spigot instead, it takes him 5 minutes and 30 seconds to fill it completely. When the drain is opened in a completely full bathtub, it takes 11 minutes for the tub to empty. How many minutes will it take Jacob to fill the bathtub with both hot and cold water running simultaneously, if the drain is open and draining at a constant pace?
Ready4 If a two-digit positive integer has its digits reversed, the resulting integer differs from the original by 36. By how much do the two digits differ?