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## 15 Questions MCQ Test Mathematical Olympiad Class 8 | Olympiad Test: Achieves Section-1

Olympiad Test: Achieves Section-1 for Class 8 2023 is part of Mathematical Olympiad Class 8 preparation. The Olympiad Test: Achieves Section-1 questions and answers have been prepared according to the Class 8 exam syllabus.The Olympiad Test: Achieves Section-1 MCQs are made for Class 8 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test: Achieves Section-1 below.
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Olympiad Test: Achieves Section-1 - Question 1

### The area of the base of a cone is 180 cm2.If the height of the cone is 8 cm what is its volume?

Detailed Solution for Olympiad Test: Achieves Section-1 - Question 1

Area of base = 180 cm2

Olympiad Test: Achieves Section-1 - Question 2

### The difference between the S.I. and C.I. on ₹ 2500 for 2 years at 20% when the compound interest is payable annually is

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Olympiad Test: Achieves Section-1 - Question 3

### Umesh tossed a coin three times. What is the probability that Umesh gets more heads than tails?

Detailed Solution for Olympiad Test: Achieves Section-1 - Question 3

Probability of getting 2 or 3 heads

Olympiad Test: Achieves Section-1 - Question 4

If 28 men can do a piece of work in 65 days. How many men will do it in 35 days?

Detailed Solution for Olympiad Test: Achieves Section-1 - Question 4

Olympiad Test: Achieves Section-1 - Question 5

In 10 days earth picks up  2.6 × 108 kg of dust from the atmosphere. How much dusk will it pick up in 45 days?

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Olympiad Test: Achieves Section-1 - Question 6

One of the factor of   is  . What is the other factor ?

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Olympiad Test: Achieves Section-1 - Question 7

Two octagonal perfect dice with number 1 – 8 are thrown together. What is the probability that both the numbers are even ?

Detailed Solution for Olympiad Test: Achieves Section-1 - Question 7

Total no. of outcomes = 8 × 8 = 64
Both numbers are even,
{(2, 2) (2, 6) (2, 8) (2, 4) (4, 2) (4, 4), (4, 6) (4, 8), (6, 2), (6, 4) (6, 6), (6, 8) (8, 2) (8, 4) (8, 6), (8, 8)}.
Required probability

Olympiad Test: Achieves Section-1 - Question 8

In what time will ₹ 64,000 amount to ₹ 68921 at 5% per annum if interest payable half yearly?

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Olympiad Test: Achieves Section-1 - Question 9

A mobile set is sold for ₹ 1498 and the seller gains 7% on it. What is its cost price?

Detailed Solution for Olympiad Test: Achieves Section-1 - Question 9

Let cost price be ₹ x.

Olympiad Test: Achieves Section-1 - Question 10

The sum of digits of a two-digit number is 9. If 9 is subtracted  from the number, its digits are interchanged.

Q. What is the half of that number?

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Olympiad Test: Achieves Section-1 - Question 11

What is the value of x if

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Olympiad Test: Achieves Section-1 - Question 12

The curved surface area of the cylinder is 5940 cm2. If its height is 30 cm, what is the diameter of the base?

Detailed Solution for Olympiad Test: Achieves Section-1 - Question 12

Curved surface area = 5940

Olympiad Test: Achieves Section-1 - Question 13

A cuboid vessel is 20 cm long and 12 cm wide. How high must it be to bold 3 liters of water?

Detailed Solution for Olympiad Test: Achieves Section-1 - Question 13

lbh = 3000

Olympiad Test: Achieves Section-1 - Question 14

What is the value of

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Olympiad Test: Achieves Section-1 - Question 15

The square root of 0.0004 is

Detailed Solution for Olympiad Test: Achieves Section-1 - Question 15