Mental Ability-Basic Arithmetic [NCO- Cyber Olympiad (SOF) Class 7]: Questions 31 - 38 of 121
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Question 31
Question 32
Question MCQ▾
Which of the following is in descending order?
Choices
Choice (4) | Response | |
---|---|---|
a. | , , | |
b. | , , | |
c. | ||
d. | Question does not provide sufficient data or is vague |
Question 33
Question MCQ▾
The average of 3 results is 10 and that of the first two is 5. The third result is________.
Choices
Choice (4) | Response | |
---|---|---|
a. | 12.5 | |
b. | 20 | |
c. | 50 | |
d. | 1 |
Question 34
Question MCQ▾
400 liters of milk is divided in two parts having ratio X: 20, if the first part is 200 liters, find x.
Choices
Choice (4) | Response | |
---|---|---|
a. | 20 | |
b. | 42 | |
c. | 41 | |
d. | 39 |
Question 35
Question MCQ▾
Which of the following number is prime?
Choices
Choice (4) | Response | |
---|---|---|
a. | 119 | |
b. | 187 | |
c. | 247 | |
d. | All a., b. and c. are correct |
Question 36
Question MCQ▾
The ratio of the number of boys and girls in a college is 5: 6. If the percentage increase in the number of boys and girls be 10% and 15% respectively, what will be the new ratio?
Choices
Choice (4) | Response | |
---|---|---|
a. | 5: 9 | |
b. | 8: 9 | |
c. | 23: 24 | |
d. | 21: 22 |
Question 37
Question MCQ▾
Find the value of in each of the following equations
Choices
Choice (4) | Response | |
---|---|---|
a. | 1.6 | |
b. | 0.5 | |
c. | 0.6 | |
d. | 5.4 |
Question 38
Question MCQ▾
An ore contain 5% Iron. How many kilograms of the ore are required to get 70 kg of Iron?
Choices
Choice (4) | Response | |
---|---|---|
a. | 850 kg | |
b. | 544 kg | |
c. | 1.44 kg | |
d. | 1400 kg |