What percentage of numbers from 1 to 90 have 1 or 9 in the units digit?
Table of Contents
- 1 What percentage of numbers from 1 to 90 have 1 or 9 in the units digit?
- 2 What percentage of number from 1 to 30 has 1 or 9 in the units digit?
- 3 What percentage of numbers from 1 to 95 have 0 or 5 in the ones place?
- 4 What percentage of numbers from 1 to 80 have 1 or 9 in the unit’s digit?
- 5 How many times does the digit 4 come to write numbers from 1 to 100?
- 6 What percentage of numbers from 1 to 90 have 1 or 9?
- 7 What percentage of 1 to 70 is 20\%?
- 8 How many times does 1 or 8 occur in 80 numbers?
What percentage of numbers from 1 to 90 have 1 or 9 in the units digit?
Clearly, the numbers which have 1 or 9 in the unit’s digit, have squares that end in the digit 1. Such numbers from 1 to 70 are 1, 9, 11, 19, 21, 29, 31, 39, 41, 49, 51, 59, 61, 69. \% = 20\%….Discussion :: Percentage – General Questions (Q. No. 4)
| [A]. | 1 |
|---|---|
| [D]. | 21 |
What percentage of number from 1 to 30 has 1 or 9 in the units digit?
20\%
Hence, the percentage of numbers from 1 to 30 which has 1 or 9 in the unit digit is 20\%.
What percentage of numbers from 1 to 90 have 3 or 7 in the unit digit?
20\% numbers from 1to 70. Clearly, the numbers which have 1 or 9 in the unit’s digit, have squares that end in the digit 1. Such numbers from 1 to 70 are 1, 9, 11, 19, 21, 29, 31, 39, 41, 49, 51, 59, 61, 69. Ans- 1,9,11,19,21,29,31,39,42,49,51,59,61,69=14 no.
What percentage of numbers from 1 to 95 have 0 or 5 in the ones place?
Percentages as Decimals and Fractions One percent is one hundredth of a whole. It can therefore be written as both a decimal and a fraction. To write a percentage as a decimal, simply divide it by 100.
What percentage of numbers from 1 to 80 have 1 or 9 in the unit’s digit?
What percentage of numbers from 1 to 80 have 1 or 9 in the unit’s digit? – Quora. 1, 11, 21, 31, 41, 51, 61, 71 are the numbers from 1 to 80, having 1 in the unit’s digit. They are 8 in numbers out of 80, that is, 8/80 = (8/80) × 100℅. = (100/10)℅ = 10℅.
What percentage of numbers from 1 to 100 has 5 or 7 in the unit’s digit?
∴ Answer is 10\%.
How many times does the digit 4 come to write numbers from 1 to 100?
The digit four appears once in each of the following: 4, 14, 24, 34, 40, 41, 42, 43, 45, 46, 47, 48, 49, 54, 64, 74, 84 and 94 for a total of 18 times.
What percentage of numbers from 1 to 90 have 1 or 9?
Maths keeps one mentally active. Percentagewise there are 18*100/90 = 20\% of numbers with 1 or 9 in the unit’s place from 1 to 90. What percentage of numbers from 1 to 70 have 1 or 9 in the unit’s digit 1/14 20 21?
How many numbers have 1 and 9 in the units place?
There are 2 numbers (1 and 9) having 1 & 9 in the units place of the single-digited numbers and 16 numbers (11,19,21,39,31,39,….81,89) having 1 & 9 in the units place. Hence, out of 90 numbers there are 16+2=18 numbers having 1 and 9 in the units place. So, the required percentage is 18 90 ∗ 100 = 20
What percentage of 1 to 70 is 20\%?
Such numbers from 1 to 70 are 1, 9, 11, 19, 21, 29, 31, 39, 41, 49, 51, 59, 61, 69. Number of such number =14. Required percentage = (14/70) x 100\% = 20\%. .
How many times does 1 or 8 occur in 80 numbers?
Out of 80 numbers 16 are the units of 1,8. each digit occurring once at unit’s place in every 10 consecutive numbers. distribution is uniform since, 10 divides 80. 8 or 10\%. Either 1 or 8 occurs (10\% + 10\%) = 20\% of the times. Hope, it helps ! Hiring CS majors for internships and entry-level roles. Get matched with your dream job.