Haryana Staff Selection Commission Recruitment Exam - Mathematics>Chapter 1 - Number System>Exam Pattern Questions>Q 19

MEDIUM

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IMPORTANT

Earn 100

The sum of natural numbers from $75$ to $99$ , is?

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Important Questions on Number System

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IMPORTANT

Haryana Staff Selection Commission Recruitment Exam - Mathematics>Chapter 1 - Number System>Exam Pattern Questions>Q 20

If

1^{3} + 2^{3} + 3^{3} + . . . . . + 10^{3} = 3025,

then

4 + 32 + 108 + . . . . . . + 4000 = ?

HARD

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IMPORTANT

Haryana Staff Selection Commission Recruitment Exam - Mathematics>Chapter 1 - Number System>Exam Pattern Questions>Q 21

If

1 + 10 + 10^{2} + . . .

up to

n

terms

= \frac{10^{n} - 1}{9},

then the sum of the series

4 + 44 + 444 + . . . .

up to

n

terms is?

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Haryana Staff Selection Commission Recruitment Exam - Mathematics>Chapter 1 - Number System>Exam Pattern Questions>Q 22

The sum of a natural number and its square equals the product of the first three prime numbers. The number is:

EASY

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Haryana Staff Selection Commission Recruitment Exam - Mathematics>Chapter 1 - Number System>Exam Pattern Questions>Q 23

The sum of all those prime numbers which are not greater than

17

is?

MEDIUM

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IMPORTANT

Haryana Staff Selection Commission Recruitment Exam - Mathematics>Chapter 1 - Number System>Exam Pattern Questions>Q 24

If

1 + 2 + 3 + . . . . + 100 = x,

then

x

is: