Mental Ability [NCO- Cyber Olympiad (SOF) Class 8]: Questions 1 - 9 of 241
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Question 1
Question MCQ▾
If 12 workers can color 24 houses in 8 days, how many houses can 6 workers color in 4 days?
Choices
Choice (4) | Response | |
---|---|---|
a. | 3 | |
b. | 24 | |
c. | 6 | |
d. | 12 |
Question 2
Question MCQ▾
The length of the minute hand on a wall clock is 21 cm. The area swept by the minute hand in 30 minutes is
Choices
Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |
Question 3
Question MCQ▾
The largest possible square is inscribed in a circle of unit radius. The area of the square in square units is
Choices
Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. | 2 |
Question 4
Question MCQ▾
If the radius of a cone is increased by 50% , its volume is increased by
Choices
Choice (4) | Response | |
---|---|---|
a. | 125% | |
b. | 50% | |
c. | 75% | |
d. | 150% |
Question 5
Question MCQ▾
The length of a rope by which a horse must be tethered to graze over an area of 1386 is
Choices
Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |
Question 6
Question 7
Question MCQ▾
The measure of an angle which is five times its complement is
Choices
Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |
Question 8
Question MCQ▾
If the area of a triangle with base x is equal to area of a square of side x, the altitude of the triangle is
Choices
Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |
Question 9
Question MCQ▾
If the radius of a cone is increased by 65% , its volume is increased by
Choices
Choice (4) | Response | |
---|---|---|
a. | 180% | |
b. | 172.25% | |
c. | 108.5% | |
d. | 125.3% |