Advertisements
Advertisements
Question
In a 2 digit number, the units place digit is x. If the sum of digits be 9, then the number is (10x – 9).
Options
True
False
Advertisements
Solution
This statement is False.
Explanation:
Given, unit’s digit = x
And sum of digits = 9
Ten’s digit = 9 – x
Hence, the number = 10(9 – x) + x
= 90 – 10x + x
= 90 – 9x
APPEARS IN
RELATED QUESTIONS
Amina thinks of a number and subtracts `5/2` from it. She multiplies the result by 8. The result now obtained is 3 times the same number she thought of. What is the number?
A positive number is 5 times another number. If 21 is added to both the numbers, then one of the new numbers becomes twice the other new number. What are the numbers?
Sum of the digits of a two digit number is 9. When we interchange the digits it is found that the resulting new number is greater than the original number by 27. What is the two-digit number?
Shobo’s mother’s present age is six times Shobo’s present age. Shobo’s age five years from now will be one third of this mother’s present age. What are their present ages?
There is a narrow rectangular plot, reserved for a school, in Mahuli village. The length and breadth of the plot are in the ratio 11:4. At the rate Rs 100 per metre it will cost the village panchayat Rs 75, 000 to fence the plot. What are the dimensions of the plot?
A grandfather is ten times older than his granddaughter. He is also 54 years older than her. Find their present ages
Arjun is twice as old as Shriya. Five years ago his age was three times Shriya’s age. Find their present ages.
A and B are together 90 years old. Five years ago A was thrice as old as B was. Hence, the ages of A and B five years back would be (x – 5) years and (85 – x) years respectively.
Sum of the digits of a two-digit number is 11. The given number is less than the number obtained by interchanging the digits by 9. Find the number.
In a two-digit number, digit in units place is twice the digit in tens place. If 27 is added to it, digits are reversed. Find the number.
