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Earn 100

How many times does the digit 6 appear when we count from 11 to 400?

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Important Questions on Numbers and Their Properties

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Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 69
In Q.68, how many numbers will be having 8 as its digit?
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Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 70
S is a number formed by writing 8 for 88 times. What will be the remainder of this number when divided by 7?
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Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 71
We are writing all the multiples of 3 from 111 to 324. How many times will we write digit 3?
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Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 72
What is the remainder when 7+77+777+7777+..... (till 100 terms) is divided by 8?
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Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 73
A number has exactly 15 composite factors. What can be the maximum number of prime factors of this number?
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Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 74
N=204×221×238×255×…×850. How many consecutive zeroes will be there at the end of this number N?
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Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 75
1st 126 natural numbers are put side by side in the ascending order to create a large number N=123456…125126 . What will be the remainder when N is divided by 5625? 
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Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 76
When a number S is divided by 3,4, and 7 successively, remainders obtained are 2,1, and 4 respectively. What will be the remainder when the same number is divided by 84?