How many positive integers less than 500 can be formed using the number 1 2 3 and 5 4 digit each digit used only once?
18 ways
How many positive integers less than 500 can be formed using the numbers 1, 2, 3, and 5 for digits, each digit being used only once. Solution: Single digit numbers can be formed in 4 ways. 3 digit number less than 500 can be formed in 3 * 3 * 2 = 18 ways.
How many number of three digit less than 500 can be formed from the integer 123456?
Answer: The numbers formed can be 60.
How many even whole numbers less than 1000 can be formed using the integers 2 3 4 and 5?
222 , 224 ; 232 and 234 ; 242 and 244 ; 252 and 254. Then 522 and 524 ; 532 and 534 ; 542 and 544 then 552 and 554. The answer is 42.
How many possible ways can write 3240?
In how many possible ways you can write 3240 as a product of 3 positive integers? We have to distribute one 5 to x, y, z in 3 ways. The total number of ways = 10×15×3=450 ways.
What is the sum of the positive even integers less than 100?
Sum of all such integers less than 100 would be 416 .
How many positive integers less than 500 begin with a 3?
How many positive integers less than 500 begin with a 3, end with a 3, or both? There are 499 integers from 1 to 499 inclusive. Less than 500, we have 1 digit, 2 digits, 3 digits number. How many positive integers less than 20 are factors of 96?
How many 3 digit numbers less than 500 can be formed?
III. All 3 digit Numbers = __ __ __ except the 1st blank for a possible 3 digit number < 500 , we have 4 options for the other two blanks so 3*4*4 = 48 , in total 48 3 digit numbers < 500 can be formed Oh!! thanks for the explantion, such question should be read quite carefully.
How many positive integers are there in 6 numbers?
With 1 digit we have 6 numbers. With 2 digits we have 6 ⋅ 6 = 36 numbers. With 3 digits we have 6 ⋅ 6 ⋅ 6 = 216 numbers. 6 + 36 + 216 = 258 positive integers. Hiring CS majors for internships and entry-level roles. Get matched with your dream job. Start interviewing for jobs and internships with top companies.
How many possible 2nd digit are there in a number?
6 possible 2nd digit : any of 1, 2, 3, 4, 5, 6, 7, except the digit we just used. To be a number of 3 digits less than 500, the number must have a digit that is less than 5 in the 100s place and have two different numbers in the 10s and 1s place.