Quantitative Aptitude for Competitive Examinations>Chapter 1 - Number System>Practice Problems Level 2>Q 7

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What will be the remainder when $10^{20}$ is divided by $1001 ?$

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Important Questions on Number System

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Quantitative Aptitude for Competitive Examinations>Chapter 1 - Number System>Practice Problems Level 2>Q 8

The numbers

1, 3, 5, \dots, 25

are multiplied together. The number of zeroes at the right end of the product is:

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Quantitative Aptitude for Competitive Examinations>Chapter 1 - Number System>Practice Problems Level 2>Q 9

A number when divided by a divisor, leaves a remainder of

63

. If the remainder is

55

when twice the number is divided by the same divisor, then the divisor is:

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Quantitative Aptitude for Competitive Examinations>Chapter 1 - Number System>Practice Problems Level 2>Q 10

The sum of two numbers is 's' and their quotient is$$\frac { p }{ q } $$. The numbers are

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Quantitative Aptitude for Competitive Examinations>Chapter 1 - Number System>Practice Problems Level 2>Q 11

How many digits are required to number a book containing

200

pages?

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Quantitative Aptitude for Competitive Examinations>Chapter 1 - Number System>Practice Problems Level 2>Q 12

Unit's digit of

7^{77} + 777^{777}

is

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Quantitative Aptitude for Competitive Examinations>Chapter 1 - Number System>Practice Problems Level 2>Q 13

A number is multiplied by

5

and

25

is added to it. The result is divided by

5

and the original number is subtracted from the same. The remainder will be:

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Quantitative Aptitude for Competitive Examinations>Chapter 1 - Number System>Practice Problems Level 2>Q 14

(\frac{1}{3} - \frac{1}{4})

is added to a number. From the sum so obtained,

\frac{1}{3}

of

\frac{1}{4}

is subtracted and the remainder is

(\frac{1}{3} + \frac{1}{4})

. The number is:

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Quantitative Aptitude for Competitive Examinations>Chapter 1 - Number System>Practice Problems Level 2>Q 15

Which one of the following does not divide

2^{1650} - 1

?