Question # 1

The horizontal distance between the two towers is 60 m. the angular elevation of the top of the taller tower as seen from the top of the shorter one is 30°. If the height of the taller tower is 150 m, the height of the shorter one is

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116 m

200 m

216 m

None of these

A conditional is regarded as false only when the antecedent is true and consequent is

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True

False

Known

Unknown

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The roots of the equation 2^2x- 10.2^x+ 16 = 0 are

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2, 8

1, 3

1, 8

2, 3

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The third term of the sequence a_n= (-1)^n-1(n-7) is ______

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8

4

-4

8

Multiplicative inverse of "1" is

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+- 1

0

1

None of these

A quadratic equation in x is an equation that can be witten in the form

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ax²+ b = 0

ax³ +b²+c=0

ax² +bx+c=0

ax³ +bx³+cx=0

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none of these

The maximum value of Z = 3x+ 4y subjected to the constrains x+ y≤ 40,x+ 2y≤ 60, x≥ 0 and y≥ 0 is

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120

100

140

160

If D = {a} , the P(D) =

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{a}

∅

{∅,{a}}

{∅,a}

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