Mental Ability (NCO- Cyber Olympiad Class 9): Questions 61 - 65 of 219

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Question number: 61

» Mental Ability » Basic Arithmetic

MCQ▾

Question

How many liters of 80% nitrogen solution should be added to 20 liters of a 40% nitrogen solution to make a 60% solution?

Choices

Choice (4) Response
a.

20 liters

b.

30 liters

c.

90 liters

d.

60 liters

Question number: 62

» Mental Ability » Basic Algebra

MCQ▾

Question

The solution of the equations 2X3Y=7 , 4X6Y=20 is

Choices

Choice (4) Response
a.

X=18,Y=12

b.

X=8,Y=5

c.

X=0,Y=0

d.

There is no solution

Question number: 63

» Mental Ability » Basic Arithmetic

MCQ▾

Question

In a pure platinum solution quantity of Sterling platinum is 90.2% . How many grams of sterling platinum must be mixed to a 80% platinum alloy to obtain a 500 gm of a 91% platinum alloy?

Choices

Choice (4) Response
a.

650 gm

b.

548 gm

c.

439 gm

d.

539 gm

Question number: 64

» Mental Ability » Basic Statistics

MCQ▾

Question

Study the diagram given below and answer the questions that follow:

Rectangle is qualified Painter, circle is Experienced painter and Circle is represent Oil painting painter

Find the qualified and experienced Oil painting painter.

Image of rectangle, circle and trapezoid

Image of Rectangle, Circle and Trapezoid

Define in image Rectangle is qualified Painter, circle is Experienced painter and Circle is representing Oil painting painter

Choices

Choice (4) Response
a.

3

b.

5

c.

6

d.

7

Question number: 65

» Mental Ability » Basic Algebra

MCQ▾

Question

The factors of the expression X4Y4 is

Choices

Choice (4) Response
a.

(XY)

b.

(X3+Y3)

c.

(X+Y)

d. Both a. and c. are correct

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