1.) Write the number names of the following in both Indian and International System:
(a) 26359812
(b) 190845623
(c) 256934520
2.) Form the greatest and smallest number using the digits 6, 5, 8, 0, 1 and 9 (repetition is not allowed)
3.) Write the Roman Numeral for (856-102= ?)
4.) Check whether 94556 is divisible by 11 or not using test of divisibility.
Answers
1. (a) 26359812
Indian - two crore, sixty three lakh, fifty nine thousand, eight hundred and twelve.
International - twenty six million, three hundred fifty nine thousand, eight hundred and twelve.
(b) 190845623
Indian - nineteen crore, eight lakh, forty five thousand, six hundred, twenty three.
International - one hundred ninety million, eight hundred forty five thousand, six hundred, twenty three.
(c) 256934520
Indian - twenty five crore, sixty nine lakh, thirty four thousand ,five hundred, twenty.
International - two hundred fifty six million, nine hundred thirty four thousand, five hundred, twenty.
2. Digits : 6, 5, 8, 0, 1 and 9
smallest number - 105680
To find the smallest number arrange the digits in ascending order.
greatest number - 986510
To find the greatest number arrange the digits in descending order.
3. Roman numeral for (856 - 102 = 754)
DCCLIV
754 = 500 + 100 + 100 + 50 + 5 − 1
500 = D
100 = C
50 = L
5 = V
1 = I
4. A number is divisible by 11 when the difference between sums of the digits in odd and even places is zero or a multiple of 11.
94556
Odd - 9 + 5 + 6 = 20
Even - 4 + 5 = 9
Difference - 20 - 9 = 11
11 is a multiple of 11 thus 94556 is divisible by 11.
Required Answer :-
1)Indian number system -
(a) 2,63,59,812 - Two crore sixty three lakh fifty nine thousand eight hundred twelve
(b) 19,08,45,623 - Nineteen crore eight lakh forty five thousand six hundred twenty three
(c) 25,69,34,520 - Twenty five crore sixty nine lakh thirty four thousand five hundred twenty
Internation number system -
(a) 26,359,812 - Twenty six million three hundred fifty nine thousand eight hundred twelve
(b) 190,845,623 - One hundred ninety million eight hundred forty five thousand six hundred twenty three
(c) 256,934,520 - Two hundred fifty six million nine hundred thrity four thousand five hundred twenty
2) Greatest number = 986510
Smallest number = 105689
3) 856 - 102
754
500 = D
200 = CC
L = 50
4 = IV
DCCLIV
4) Apply divisibility rule of 11
Sum of odd place and sum of even when subtracted if the number is 11 or a multiple of 11 then it will be divisible by 11 if not then it will not divisible by 11
94556
Odd place = 9 + 5 + 6 = 20
Even place = 4 + 5 = 9
Difference = 11
As we may see the difference is 11. Therefore it will be divisible by 11