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Q: How many positive integers n from 1 to 1000 inclusive are there such that n is a multiple of 3 and the digit sum of n is also a multiple of 3?

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Of the 729 numbers that satisfy the requirement of positive integers, 104 are divisible by 7.

All multiples of 3 have digits that add up to a multiple of 3. There are 333 multiples of 3 between 1 and 1000.

18 positive integers and 36 integers (negative and positive)

Integers are standalone numbers that can be written without a fraction or decimal point.There are 9 3-digit positive integers N such that N is a multiple of both 7 and 13. They are 182, 273, 364, 455, 546, 637, 728, 819 and 910.

90

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The smallest positive 4-digit multiple of seven is 1,001.

There are 10 one digit positive integers (0 - 9) and 9 one digit negative integers (-9 to -1) making 19 in all.

There are 3168 such numbers.

the answer would be 900

The smallest, positive 4-digit multiple of 17 is 1,003.

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22 of them.

They are 3-digit positive integers.

10 of them.

54

The only positive two-digit multiple of 12 and 10 is 60.

there are 999 - 100 + 1 = 900 positive triple digit positive integers, between 100 and 999.(e.g. there are 102 - 100 + 1 = 3 triple digit integers between 100 and 102,namely 100, 101 and 102.)multiply that by 2 to take in consideration of the negative integers,you have 1800 triple digit integers.

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Positive integers are greater than negative integers. For positive integers: * The integer with more digits is larger. * If two integers have the same length, compare the first digit. If the first digit is the same, compare the second digit, then the third, etc., until you find a difference. In each case, the integer with the larger digit (at the first position where you find a difference) is the larger one.

There are 2,000 of them ... every positive integer (counting number) from 2,000 to 2,999 .

900 numbers from 100 to 999

72 is one

Three of them.

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