Question 1 :
(3 + 4)2 =
(A) 13 (B) 14 (C) 19 (D) 25 (E) 49
Solution :
= (3 + 4)2
= 72
= 49
Hence the answer is 49.
Question 2 :
The exact value of √49 - √24 is
(A) 2 (B) between 2 and 5 (C) 5 (D) more than 5
(E) The expression does not have an exact value.
Solution :
= √49 - √24
= 7 - √(2⋅2⋅2⋅3)
= 7 - 2√6
The answer is between 2 and 5.
Question 3 :
200% of 7 is
(A) .14 (B) 7 (C) 14 (D) 21 (E) 1,400
Solution :
= 200% of 7
= (200/100) ⋅ 7
= 14
Hence the answer is 14.
Question 4 :
(All line segments are either horizontal or vertical, as shown.) The perimeter of the figure is
(A) 5 (B) 6 (C) 7 (D) 12 (E) 14
Solution :
The two unmarked vertical side must add upto 3, and two unmarked horizontal sides must add upto 4.
Perimeter = 3. + 4 + 3 + 4 = 14
Hence the perimeter is 14.
Question 5 :
What is the value of N if (1/5) – (1/6) = 1/N?
(A) 7 (B) 30 (C) 1/30 (D) -30 (E) -1/30
Solution :
= (1/5) – (1/6)
Since the denominators are not same, we have to take L.C.M.
= (6 - 5)/30
= 1/30
Hence the value of N is 30.
Question 6 :
Find the value of (24 – 42) + (23 – 32)
(A) -11 (B) -8 (C) -1 (D) 0 (E) 1
Solution :
= (24 – 42) + (23 – 32)
= (16 - 16) + (8 - 9)
= 0 + (-1)
= -1
Hence the answer is -1.
Question 7 :
On the number line shown, Q (not shown) is the midpoint of PR. What is the midpoint of QS?
(A) -5 (B) -4 (C) 0 (D) 1 (E) 8
Solution :
Midpoint of PR = Q
Distance between PR :
-8 to -6 = -2 units, -6 to -4 = -2 units, -4 to -2 = -2 units,
-2 to 0 = -2 units, 0 to 2 = 2 units.
Midpoint of PR, Q = -6/2 = -3
S is located on 5.
Q is located on -3
Midpoint of QS = (-3 + 5)/2 = 2/2 = 1
Question 8 :
The ratio of boys to girls at a dance was 2 to 3. If 45 girls attended, what is the number of boys who attended?
(A) 9 (B) 18 (C) 27 (D) 30 (E) 45
Solution :
Ratio of boys to girls = 2 : 3
Number of girls attended = 45
2x + 3x = 5x
5x = 45
x = 9
Number of boys attended = 2(9) = 18
Hence the number of boys is 18.
Question 9 :
If the measure of angle A is 40°, then x + y =
(A) 80° (B) 120° (C) 180° (D) 220° (E) 360°
Solution :
Let the other interior angles of triangle be "p" and "q"
x + p = 180
y + q = 180
x + p + y + q = 180 + 180
x + y + (p + q) = 360 ---(1)
p + q + 40 = 180
p + q = 180 - 40 = 140
Applying the value of p + q in (1), we get
x + y + 140 = 360
x + y = 360 - 140
x + y = 220
Hence the answer is 220.
Question 10 :
If 6x is increased by 4y, and the sum is divided by 2, the result is equivalent to
(A) 3x + 4y (B) 6x + 2y (C) 3x + 2y
(D) (10x + y)/2 (E) 5(x + y)
Solution :
By converting the given statement "6x is increased by 4y, and the sum is divided by 2" into expression. We get
= (6x + 4y) / 2
= 2(3x + 2y) / 2
= 3x + 2y
Hence the answer is 3x + 2y.
Kindly mail your feedback to v4formath@gmail.com
We always appreciate your feedback.
©All rights reserved. onlinemath4all.com
Nov 30, 24 07:08 AM
Nov 30, 24 07:03 AM
Nov 30, 24 06:47 AM