# Basic Mathematics-Arithmetic (KVPY (Kishore Vaigyanik Protsahan Yojana) Stream-SA (Class 11) Math): Questions 63 - 68 of 83

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## Question number: 63

» Basic Mathematics » Arithmetic » Number Games

MCQ▾

### Question

Consider an incomplete pyramid of balls on a square base having 15 layers; and having 10 balls on each side of the top layer. Then the total number N of balls in that pyramid satisfies

### Choices

Choice (4) Response

a.

60000 < N < 7000

b.

4000 < N < 5000

c.

5000 < N < 6000

d.

3000 < N < 40000

## Question number: 64

» Basic Mathematics » Arithmetic » Rates, Speeds and Unitary Method

MCQ▾

### Question

A ladder 12 cm long is leading against a wall. The bottom of the ladder is pulled along the ground, away from the wall, at the rate of 3 cm/sec. How fast is its height on the wall decreasing when the foot of the ladder is 5 cm away from the wall?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 65

» Basic Mathematics » Arithmetic » Ratio and Proportion

MCQ▾

### Question

A bag contains 50 p, 25 p and 10 p coins in the ratio, amounting to Rs. 95. Find the numbers of coins of each type,

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 66

» Basic Mathematics » Arithmetic » Number Games

MCQ▾

### Question

The square of is –

### Choices

Choice (4) Response

a.

56.25

b.

7.5

c.

8.5

d.

72.25

## Question number: 67

» Basic Mathematics » Arithmetic » Number Games

MCQ▾

Value of is –

### Choices

Choice (4) Response

a.

16

b.

4

c.

9

d.

25

## Question number: 68

» Basic Mathematics » Arithmetic » Rates, Speeds and Unitary Method

MCQ▾

### Question

A particle moves along the curve. Find the point on the curve at which the y-coordinate is changing 5 times as fast as the x-coordinate.

### Choices

Choice (4) Response

a.

b.

c.

d.

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