Question

1. Write the number 114 in roman numerals
2. Make the greatest five digit number by using 1,2,7,9,4 without repeating
3. Estimate product of 39×42
Who answers all this will get a huge prize

Answer 1

Step-by-step explanation:

1. Roman number of 114 is written as (100+10)+4=CXIV

2. Given, digits are 12794

For greatest number, we write the digits in descending order i.e. .97421

So, the greatest five-digit number is 97421

3. How to estimate products

To estimate the result of multiplication (product), round the numbers to some close numbers that you can easily multiply mentally. One method of estimation is to round all factors to the biggest digit (place value) they have. (This is somewhat of a crude method but serves as a starting point in learning estimation.)

40×42 = 1680