# NCO- Cyber Olympiad (SOF) Class 8: Questions 159 - 163 of 510

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## Question number: 159

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MCQ▾

### Question

James walked 20 meters towards north. Then he turned to his left and walked 15 meters. He then turned towards his left and walked 20 meters. He again turned to his right and walked 10 meters. At what distance is he from the starting point and in which direction?

### Choices

Choice (4)Response

a.

25 meters – south

b.

35 meters – west

c.

25 meters – west

d.

40 meters – west

## Question number: 160

» Mental Ability » Number Games » Number Analogies

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MCQ▾

### Question

What least number must be subtracted from 6090 to get a perfect square? Also, find the square root of the perfect square.

### Choices

Choice (4)Response

a.

12,87

b.

6,78

c.

8,72

d.

15,70

## Question number: 161

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MCQ▾

### Question

The difference between the compound interest and the simple interest on a certain sum at 5 % per annum for 3 years is Rs. 560. Find the sum.

### Choices

Choice (4)Response

a.

Rs.

b.

Rs.

c.

Rs.

d.

Rs.

## Question number: 162

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MCQ▾

### Question

Which of the following is a rational number?

### Choices

Choice (4)Response

a.

b.

1.95

c.

d.

## Question number: 163

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MCQ▾

### Question

An ice-cream parlour makes sundaes with chocolates or vanilla ice cream and strawberry, chocolate or caramel topping. Which tree diagram shows all possible combinations of sundaes with one flavor of ice cream and one topping?

### Choices

Choice (4)Response

a.

b.

c.

d.

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