GMAT Math Practice Test

An ideal year consists of 365 days. This is the standard length of a year in the Gregorian calendar, which is the most widely used calendar system in the world. It is based on the Earth's orbit around the Sun, with each year approximately equal to the time it takes for the Earth to complete one revolution around the Sun. Therefore, 365 days is the correct answer for the number of days in an ideal year.

The total of the numbers 2, 5, 7, 9, and 3 is 26.

In the equation x + 9 = 15, we need to find the value of x. To isolate x, we need to subtract 9 from both sides of the equation. This will give us x = 15 - 9, which simplifies to x = 6. Therefore, the correct answer is 6.

The correct answer is 48 because when you subtract 12 from 60, you are taking away 12 units from 60, resulting in 48.

The expression "1/2 of 20" means dividing 20 by 2. When we divide 20 by 2, we get the result of 10. Therefore, the correct answer is 10.

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To find the 75% of a number, we multiply the number by 0.75. In this case, 200 multiplied by 0.75 equals 150. Therefore, 150 is the correct answer.

To find out how many times 2 can be obtained in 200, we need to divide 200 by 2. When we divide 200 by 2, we get 100. Therefore, 2 can be obtained 100 times in 200.

In the order of mathematical operations, brackets come first. This is because brackets indicate that the operations inside them should be performed first before any other operation. This is known as the "order of operations" or "PEMDAS" (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction). So, when solving an expression or equation, any operations inside brackets should be done first, followed by any exponents, then multiplication and division, and finally addition and subtraction.

400 is a perfect square because it is the square of 20. A perfect square is a number that can be expressed as the product of two equal integers. In this case, 20 x 20 = 400, making it a perfect square.