Find the additive inverse of ^@ \dfrac{ 43 }{ -12 }. ^@

A.	^@ \dfrac{ -12 } { -43 } ^@
B.	^@ \dfrac{ 43 }{ 12 } ^@
C.	^@ \dfrac{ -12 } { 43 } ^@
D.	^@ \dfrac{ 43 }{ -12 } ^@

^@\left[(7 - x) (x + 6) + (-x + 10) (2x + 5) - (x-y) (6x - y)\right] - 7x^2 - 2x + 8^@

A.	^@-16x^2 - y^2 + 14x + 7xy + 100^@
B.	^@-16x^2 - 2y^2 + 14x + 7xy + 100^@
C.	^@-16x^2 - y^2 + 14x + 7xy + 98^@
D.	^@-16x^2 - y + 14x + 7xy + 100^@

What is the sum of all interior angles of a polygon of ^@12^@ sides^@?^@

A.	^@ 18 \text{ right angles } ^@
B.	^@ 20 \text{ right angles } ^@
C.	^@ 23 \text{ right angles } ^@
D.	^@ 26 \text{ right angles } ^@

What is the value of ^@51^2^@?

A.	^@2550^@
B.	^@2601^@
C.	^@2500^@
D.	^@2652^@

Calculate the cube root of ^@2.197^@.

A.	^@0.4^@
B.	^@1.4^@
C.	^@0.3^@
D.	^@1.3^@

A trader marks his goods at ^@30 \% ^@ above the cost price and allows a discount of ^@20 \% ^@. Find his gain ^@ \%. ^@

A.	^@ 4 \% ^@
B.	^@ 5.21 \% ^@
C.	^@ 7.88 \% ^@
D.	^@ 9 \% ^@

Find factors of ^@-5a^ { 3 } + 26a^ { 2 }b-24ab^ { 2 }^@.

A.	^@a(a-4b)(-5a + 6b)^@
B.	^@a(a-4b)(5a-6b)^@
C.	^@(a-4b)(-5a + 6b)^@
D.	^@a(a-4b)(-5a-6b)^@

Which of the following CANNOT be true for a polyhedron?

A.	Faces ^@= 6^@, Vertices ^@= 24^@, Edges ^@= 28^@
B.	Faces ^@= 5^@, Vertices ^@= 4^@, Edges ^@= 7^@
C.	Faces ^@= 16^@, Vertices ^@= 9^@, Edges ^@= 23^@
D.	Faces ^@= 27^@, Vertices ^@= 15^@, Edges ^@= 25^@

Find the total surface area and the lateral surface area of a cuboid which is ^@10 \space m^@ long, ^@8 \space m ^@ broad and ^@7 \space m^@ high.

A.	^@402 \space m^2^@, ^@252 \space m^2^@
B.	^@412 \space m^2^@, ^@252 \space m^2^@
C.	^@408 \space m^2^@, ^@242 \space m^2^@
D.	^@412 \space m^2^@, ^@255 \space m^2^@

243^-3/5 = ?

A.	1 9
B.	1 27
C.	1 243
D.	1 81

A man completes  

1

6

  of a job in 6 days. At this rate, how many more days will it take him to finish the job?

A.	26 days
B.	32 days
C.	39 days
D.	30 days

Factorize:
^@y^{ 2 } - xy(1 - x^{ }) - x^{ 3 }^@

A.	^@\left(y + x\right)\left(y - x^2\right)^@
B.	^@\left(y - x\right)\left(y + x^2\right)^@
C.	^@\left(y - x\right)\left(y - x^2\right)^@
D.	^@\left(y + x\right)\left(y + x^2\right)^@

If you draw a straight line passing through points (1, 2) and (2, 1), find the point where line intersects with y-axis.

A.	(0, 5)
B.	(0, 2)
C.	(0, 4)
D.	(0, 3)

If 81a736 is a six-digit number which is divisible by 9, find the smallest value of a.

A.	1
B.	2
C.	0
D.	4

Phengdy says, If Kimsan gives me KHR10, he will have half as much as Thida. But, if Thida gives me KHR10 then three of us will have the same amount. What is the total amount of money that Phengdy, Kimsan, and Thida have among themselves?

A.	KHR100
B.	KHR110
C.	KHR70
D.	KHR90

A shopkeeper sells two qualities of corn at the rates of KHR420 per kg and KHR390.5 per kg, gaining 20% and 10% profit respectively. If he mixes the two variants in the ratio 1:4 and sells the mixture at KHR407.1 per kg, what is his gain% or loss%?

A.	15% profit
B.	20% profit
C.	20% loss
D.	15% loss

Khemrin invested KHR1000 in mutual funds. He is being offered 8% simple interest per annum. If Khemrin takes out all his money from the funds at the end of 10 years. Find the amount of interest received by him.

A.	KHR720
B.	KHR960
C.	KHR800
D.	KHR880

A sum of money doubles itself in ^@3^@ years when the interest is compounded annually. In how many years will it amount to ^@4^@ times of itself?

A.	^@6^@ years
B.	^@26^@ years
C.	^@4^@ years
D.	^@14^@ years

What is the value of ^@\left(-3x^{ 3 } + 3y^{ 4 }\right)\left(-5x^{ } - 4y^{ 5 }\right) ^@ at ^@x = -3^@ and ^@y = -1^@?

A.	^@1596^@
B.	^@-1596^@
C.	^@-3496^@
D.	^@3496^@

Simplify: (9b² - 30b + 25) ÷ (3b - 5).

A.	(3b - 5)
B.	(5b - 3)
C.	(3b + 5)
D.	(5b + 3)

In 2004, the meteorological office predicted the weathers completely right for the months of february and april, and completely wrong for all the other months. What is the probability that the forecast was wrong for a given day that year?

A.	59 365
B.	307 365
C.	307 366
D.	310 366

4 workers can build a 140 feet long wall in 7 days. At the same rate, how long will it take for 6 workers to build a 240 feet long wall?

A.	8 days
B.	6 days
C.	10 days
D.	9 days