GMAT考满分·题库

搜索

收录题目9362道

搜索结果共2052条

来源 题目内容
If x and y are integers, what is the value of $${2}{x}^{6y}-{4}$$ ?(1) $${x}^{2y}={16}$$(2) xy = 4
Magoosh $${\frac{a}{b}+1}\over{\frac{c}{b}}$$ In the expression above, a, b and c are different numbers and each is one of the numbers 2, 3 or 5. What is the greatest possible value of the expression?
If $${2}^{x}+{2}^{x}+{2}^{x}+{2}^{x}={2}^{n}$$, what is x in terms of n?
OG17 OG18 OG19 OG20 OG2022 A sequence of numbers $${a}_{1}$$, $${a}_{2}$$, $${a}_{3}$$, ... is defined as follows:$${a}_{1}$$ = 3, $${a}_{2}$$ = 5, and every term in the sequence after $${a}_{2}$$ is the product of all terms in the sequence preceding it, e.g., $${a}_{3}$$ = ($${a}_{1}$$)($${a}_{2}$$) and $${a}_{4}$$ =($${a}_{1}$$)($${a}_{2}$$)($${a}_{3}$$). If $${a}_{n}$$ = t and n > 2, what is the value of $${a}_{n+2}$$ in terms of t?
191031 What's the variance of four numbers 9, 8, 7, 4?
Ready4 A certain right triangle has side lengths x, y, and z, where x < y < z. If the area of this triangular region is 1, which of the following indicates all of the possible values of y?
190302 ($$\frac{1}{3^{2}-$$\frac{1}{3}$$*$$\frac{1}{4}}$$($$\frac{1}{3^{2} }$$+$$\frac{1}{3}$$*$$\frac{1}{4}$$}$$=
Ready4

For what value of between –4 and 2, inclusive, is the value of the greatest?
PREP07 Test 1 The value of $$\frac{10^9-10^4} {10^8-10^5}$$ is closest to which of the following?
OG12 OG15 OG16 OG17 OG18 OG19 OG20 OG2022 The value of $$\frac{({2}^{-14}+{2}^{-15}+{2}^{-16}+{2}^{-17})}{5}$$ is how many times the value of$${2}^{-17}$$?
Flying at constant speed, an airplane of type I (plane I) covers a certain distance between two points in 15 hours. An airplane of type II (plane II) covers the same distance in 10 hours. If plane I makes a landing after flying for 9 hours along the route, how many hours will it take plane II to complete the remainder of the route between the landing point of plane I and the destination?
191222 $$\frac { 1 \frac { 1 } { 2 } } { 1 \frac { 1 } { 5 } } = x \times \frac { 1 \frac { 1 } { 5 } } { 1 \frac { 1 } { 2 } }$$ ,What is the value of x?
191020 Susan drove 30 miles for the whole trip. It takes her car 15miles per gallon for the first 10 miles, and 45 miles per gallon for the remaining trip. What is the total oil consumption?
Which of the following is NOT equivalent to $${49}{a}^{2}={9}{b}^{2}-{4}$$?
Which of the following is NOT equivalent to $${49}({a}^{2})={9}({b}^{2})-{4}$$?
What is the value of $${a}^{4}-{b}^{4}$$?(1)$${a}^{2}-{b}^{2}= 16$$(2)$$a+b=8$$
Ready4

$$\frac{2}{\frac{3}{4}}=$$
191020 $$\frac{1}{4}$$ ·$$20^8$$=?
Ready4

In an increasing sequence of 8 consecutive odd integers, the sum of the first 4 integers is 656. What is the sum of the last 4 integers in the sequence?