# NCO- Cyber Olympiad (SOF) Class 9: Questions 247 - 251 of 522

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## Question number: 247

Edit
MCQ▾

### Question

How many liters of 30 % alcohol solution should be added to 50 liters of a 60 % alcohol solution to make a 40 % solution?

### Choices

Choice (4)Response

a.

60 liters

b.

100 liters

c.

40 liters

d.

80 liters

## Question number: 248

Edit
MCQ▾

### Question

When the following figure is folded to form a cube, which color would lie opposite the face bearing pink color?

### Choices

Choice (4)Response

a.

Blue

b.

Grey

c.

Red

d.

Black

## Question number: 249

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MCQ▾

### Question

Select the figure from the four options, which when placed in the blank space of the problem figure would complete the pattern

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 250

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MCQ▾

### Question

If , find the value of .

### Choices

Choice (4)Response

a.

450

b.

444

c.

488

d.

446

## Question number: 251

Edit
MCQ▾

### Question

Out of the four figures (A), (B), (C), and (D), given in each problem, three are similar in a certain way. However, one figure is not like the other three. Choose the figure which is different from the rest

### Choices

Choice (4)Response

a.

b.

c.

d.

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