Mental Ability-Basic Algebra (NCO- Cyber Olympiad Class 9): Questions 76 - 80 of 101

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Question number: 76

» Mental Ability » Basic Algebra

Appeared in Year: 2011

MCQ▾

Question

An article was sold for Rs. 144. If the percentage of profit was numerically equal to the cost price, the cost of the article was ________

Choices

Choice (4) Response
a.

Rs. 100

b.

Rs. 72

c.

Rs. 80

d.

Rs. 90

Question number: 77

» Mental Ability » Basic Algebra

MCQ▾

Question

Which expression describes the area in square units of a rectangle that has a width of 9x7y3 and a length of 2x8y8 ?

Choices

Choice (4) Response
a.

18x21y3

b.

18x15y11

c.

18x12y15

d.

18x4y5

Question number: 78

» Mental Ability » Basic Algebra

MCQ▾

Question

Which expression describes the area in square units of a rectangle that has a width of 6xy3z2 and a length of 4y2z ?

Choices

Choice (4) Response
a.

24xy5z3

b.

23xy4z6

c.

23x2y5z3

d.

24x2y3z5

Question number: 79

» Mental Ability » Basic Algebra

Appeared in Year: 2011

MCQ▾

Question

Which of the following could be the graph of ax+by=c where c0 ?

Choices

Choice (4) Response
a.
Given the multiple graph – Choice A

Given the Multiple Graph – Choice A

Given the multiple graphs of ax + by = c and c is not equal to 0

b.
Given the multiple graph – Choice B

Given the Multiple Graph – Choice B

Given the multiple graphs of ax + by = c and c is not equal to 0

c.
Given the multiple graph – Choice C

Given the Multiple Graph – Choice C

Given the multiple graphs of ax + by = c and c is not equal to 0

d. All of the above

Question number: 80

» Mental Ability » Basic Algebra

Appeared in Year: 2011

MCQ▾

Question

Sandy has the following scores on her science tests 88,91,89,85,92

If she wants to increase her current test mean by at least 1 point, what is the minimum score she must make on her next test?

Choices

Choice (4) Response
a.

89

b.

90

c.

95

d.

92

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