5
Q:

# Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is  ?

 A) 5 B) 4 C) 7 D) 6

Explanation:

Let the number be x. Then,

$3x2$ - 4x = x + 50

$3x2$- 5x - 50 = 0

(3x + 10)(x - 5) = 0

x = 5

Q:

What does it mean to calculate frequencies within a dataset?

 A) to calculate the product of two variables to make a third variable B) to count the number of cases that fall into different subgroups within a dataset C) to count the number of times a dataset is used by a student D) to calculate the sum of a column of variables in a dataset

Answer & Explanation Answer: B) to count the number of cases that fall into different subgroups within a dataset

Explanation:

Frequency is what means how many times the event occurs in the same period.

0 55
Q:

Name a pair of complementary angles?

 A) B + C B) A + C C) C + C D) B + A

Answer & Explanation Answer: D) B + A

Explanation:

Complementary angles are those whose sum is 90.

Given here, is a right angled triangle, where anfle C is 90 deg. In this, sum of Angles A + C = 90, since, sum of angles in a right angled triangle = 180, angle C = 90 and

hence sum of A + B = 180 - C = 180 - 90 = 90.

Hence, the pair of cimplementary angles in the given triangle = Angle A + B.

2 160
Q:

Two angles whose sum is 90 are

 A) Supplementary angles B) corresponding angles C) Complimentary angles D) Alternate angles

Answer & Explanation Answer: C) Complimentary angles

Explanation:

Complimentary angles are those two angles whose sum is 90 whereas two angles whose sum is 180 are called Supplementary angles.

2 305
Q:

Smallest prime number greater than 200?

 A) 201 B) 205 C) 211 D) 203

Explanation:

From the trial and error method of division,

201 is divisible by 3

205 is divisible by 5

203 is divisible by 7

Hence, after eliminating three options, remained is 211 and is divisible by only 1 and itself.

Therefore, 211 is the smallest prime number greater than 200.

1 306
Q:

Which statement best compares a line and a point?

 A) A point has no dimension and a line has one dimension. B) A line can have line segments on it whereas a point cannot be on any line segment. C) point is a location whereas a line has several planes located on it D) A line can lie on a plane whereas a point cannot lie on a plane.

Answer & Explanation Answer: A) A point has no dimension and a line has one dimension.

Explanation:

A point has no dimension and a line has one dimension is the statement that best compares a line and a point.

1 480
Q:

9 tens 10 ones equals

 A) 910 B) 90 C) 91 D) 100

Explanation:

9 tens 10 ones equals

=> 9 x 10 + 10 x 1

=> 90 + 10

=> 100.

0 441
Q:

What is the value of 28 tens?

 A) 28 B) 2 C) 2800 D) 280

Explanation:

Here asked for the value of 28 tens

=> 28 x 10 = 280.

1 462
Q:

How many right angles does a square have?

 A) 2 B) 6 C) 4 D) 8