Number System
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101 The difference between a two digit number and the number obtained by interchanging digit's of the number is 9. The sum of the two digit's of the number is 15. What is product of the two digit's of number ?
102 If one-third of one-fourth of a number is 15, then three-tenth of that number is:
105 The product of two consecutive even numbers is 15128. Find the average of these two numbers:
106 When in a school 54 students are made to stand in a row when 30 such rows are formed. If the students are made to stand in the rows of 45, how many such rows can be formed ?
107 The value of $$\frac{(0.96)^3 - (0.1)^3}{(0.96)^2 + 0.096 + (0.1)^2}$$ is:
108 A number consists of two digit's. If the digit's interchange generated number is added to the original number, then the resulting number will always divisible by: