Mathematics looks at measurement, relationships, and properties of numbers and groups using numbers and symbols. Important topics in math include arithmetic, algebra, geometry, and calculus.
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Question 281: What is the n-th term of the sequence 2, 6, 12, 20...?
Options:
A) 4n - 2
B) 2(3n - 1)
C) n2 + n
D) n2 + 3n + 2
Show Answer
The correct answer is C .
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Question 282: Find correct to 3 decimal places ( + ) - (0.05 x 2.05)
Options:
A) 99.998
B) 98.999
C) 89.899
D) 9.998
Show Answer
The correct answer is A .
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Question 283:
In the figure, PQRS is a circle with ST||RQ. Find the value of x if PT = PS
Options:
A) 70
B) 55
C) 40
D) 35
Show Answer
The correct answer is B .
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Question 284: Rationalize the denominator of the expression
Options:
A)
B)
C)
D)
Show Answer
The correct answer is B .
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Question 285:
A binary operation Δ is defined by a Δ b = a + 3b + 2.
Find (3 Δ 2) Δ 5
Options:
A) 35
B) 59
C) 28
D) 87
Show Answer
The correct answer is C .
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Question 286:
In the figure, PQRS is a rectangle. If the shaded area is 72 sq. cm, find h.
Options:
A) 12cm
B) 10cm
C) 8cm
D) 5cm
Show Answer
The correct answer is D .
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Question 287: Without using table, calculate the value of 1 + sec2 30o
Options:
A) 2
B)
C)
D) 3
Show Answer
The correct answer is A .
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Question 288: If tan θ = 4/3, calculate sin2θ - cos2θ.
Options:
A) 16/25
B) 24/25
C) 7/25
D) 9/25
Show Answer
The correct answer is C .
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Question 289: The area of a square is 444 sqcm. Find the length of the diagonal.
Options:
A) 12 cm
B) 11cm
C) 13 cm
D) 12 cm
Show Answer
The correct answer is A .
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Question 290: If the 9th term of an A.P is five times the 5th term, find the relationship between a and d.
Options:
A) 2a + 2 = 0
B) 3a + 5d = 0
C) a + 3d = 0
D) a + 2d = 0
Show Answer
The correct answer is C .