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What are the last two digits of the number 3400?

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Important Questions on Number Systems

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How to prepare for Quantitative Aptitude for the CAT>Chapter 1 - Number Systems>Level of Difficulty>Q 117
The unit digit in 17×27×37×.....×97×117×127×.....×197×217.....×997 is 
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How to prepare for Quantitative Aptitude for the CAT>Chapter 1 - Number Systems>Level of Difficulty>Q 118
How many two digit numbers have their squares as 1 more than a multiple of 24?
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How to prepare for Quantitative Aptitude for the CAT>Chapter 1 - Number Systems>Level of Difficulty>Q 119
There are 80 questions in a test. Each correct answer fetches 1 mark, each wrong answer and unanswered question attract penalty of 14 mark and 18 mark respectively each. Frodo scored 23 marks in the test. What is the minimum possible number of the question wrongly answered by him?
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How to prepare for Quantitative Aptitude for the CAT>Chapter 1 - Number Systems>Level of Difficulty>Q 120
1777 has exactly 5 digits when converted to base 'x' from the decimal system. What is the minimum possible value of x?
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How to prepare for Quantitative Aptitude for the CAT>Chapter 1 - Number Systems>Level of Difficulty>Q 121
What will be the sum of all natural numbers between 101 and  1000 which on division by 2, 4, 6, 8, 10 leave remainders 1, 3, 5, 7, 9 respectively?
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How to prepare for Quantitative Aptitude for the CAT>Chapter 1 - Number Systems>Level of Difficulty>Q 122
Unit digit of which of the following is the same as the units digits of a17+b17For any positive integer value of a,b?
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How to prepare for Quantitative Aptitude for the CAT>Chapter 1 - Number Systems>Level of Difficulty>Q 123
How many 4 Digit numbers are there in the decimal system, which have exactly 4 Digits when expressed in Base 6, Base 7, Base 8?
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How to prepare for Quantitative Aptitude for the CAT>Chapter 1 - Number Systems>Level of Difficulty>Q 124
What is the difference between the highest and the least four digit natural numbers that have exactly four digits when expressed in Base 6 and Base 7.