# NSTSE (National Science Talent Search Exam- Unified Council) Class 7: Questions 780 - 787 of 1732

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## Question number: 780

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MCQ▾

### Question

Find the area of the shaded region of the following figure.

ABCD is a rectangle having length 80 cm and breadth 40 cm. P, Q, R and S are midpoints of AB, BC, CD and AD respectively.

### Choices

Choice (4) Response

a.

400

b.

800

c.

1600

d.

3200

## Question number: 781

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MCQ▾

### Question

Conjugate surd of is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 782

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MCQ▾

### Question

Who will occupy more space when taken into equal amount, water or ice?

### Choices

Choice (4) Response

a.

Cannot say

b.

Water

c.

Ice

d.

None of the above

## Question number: 783

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MCQ▾

### Question

If two angles in a triangle are and , then the third angle is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 784

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MCQ▾

### Question

The identity element w. r. t multiplication in integers is ________.

### Choices

Choice (4) Response

a.

1

b.

-1

c.

0

d.

None of the above

## Question number: 785

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MCQ▾

### Question

By selling an article for Rs. 500 a man loses 15%. At what cost he will sell in order to gain 20%?

### Choices

Choice (4) Response

a.

580 Rs.

b.

1000 Rs.

c.

760 Rs.

d.

706 Rs.

## Question number: 786

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MCQ▾

The value of is

### Choices

Choice (4) Response

a.

1520

b.

1400

c.

1620

d.

1240

## Question number: 787

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MCQ▾

### Question

20 years ago, when my parents got married, their average age was 25 years, now the average age of my family, consisting of myself and my parents only is 35 years. My present age is

### Choices

Choice (4) Response

a.

21 years

b.

16 years

c.

19 years

d.

15 years

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