Mental Ability-Basic Arithmetic (NCO- Cyber Olympiad (SOF) Class 9): Questions 47 - 49 of 49
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Question number: 47
» Mental Ability » Basic Arithmetic
Question
Find the measure of all the angles of parallelogram, if one angle is 24° less than twice the smallest angle.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 60°, 120°, 60°, 120° |
|
| b. | 66°, 114°, 66°, 114° |
|
| c. | 68°, 112°, 68°, 112° |
|
| d. | 56°, 124°, 56°, 124° |
|
Question number: 48
» Mental Ability » Basic Arithmetic
Question
Given, , and find the value of the following expression correct up to three places of decimal: .
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | -0.413 |
|
| b. | 0.213 |
|
| c. | -0.213 |
|
| d. | 0.413 |
|
Question number: 49
» Mental Ability » Basic Arithmetic
Question
The bacteria in a culture grows by 10 % in the first hour, decreases by 10 % in the second hour and again increases by 10 % in the third hour. If at the end of the third hour the count of bacteria is 30000. The original count of bacteria in the sample is________
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 32870 |
|
| b. | 32670 |
|
| c. | 32970 |
|
| d. | 32770 |
|