Math and Arithmetic

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The largest prime number less than 1000 is 997.The largest prime number no less than 1000 is currently 257,885,161-1

The number 100,002 is divisible by 3. The largest 5 digit number is 99996 (6 less).

There are 130 positive integers less than 1,000 that are divisible by seven but not divisible by 11

There are 90 integers less than 1,000 that are divisible by 11.

Start with 1000 and work back, rejecting any composites that you find.

There are 83 numbers less than 1,000 that are divisible by both three and four.

From 1 (inclusive) to 1000(inclusive,) 750.

number less than 100 that is divisible by 2 5 and 9 = 90

There are 544 positive integers less than 1,000 that are either divisible by two or by 11.

1000 more is 577233 1000 less is 575233

Check the Fibonacchi number sequences for 2, 3, 5, & 8 (7 is not a Fibonacchi number).

No. To be divisible by a number it must be greater than, or equal to, that number. 10 is less than 66, so 10 cannot be divisible by 66.

A triangle number has the form n(n+1)2 for some positive integer n.then when you substitute n=44 then it is 990 which is largest triangular number before hundred.

67 will be the largest prime number less than 70.

There are 333 of them - too many to list here.

10 less than 1000 = 1000 minus 10 = 990

There is no smallest number since if any number is divisible by 8, then 8 less than that number is also divisible by 8 - and that argument continues all the way to minus infinity!The smallest positive number divisible by 8 is 8, itself.

Simple Method: 1) Ask yourself: What is the smallest four digit number? No prizes here. 2) Answer = 1000. 3) Now, count back one by one and evaluate whether the number is divisible by three. Four example, one less than 1000 is 999. If we divide 999 by 3, we get 333, which means that the next number divisible by three will be 1002. Their is a method for evaluating items like this quickly, and its called "divisibility tests". Here are some of the more common ones for future use: 2 - If number is even it is divisible by two. 3 - If digits sum to or sum to a product of three, it is divisible by three. 4 - If the last two digits are divisible by four, then it is divisible by four. 5 - If the last number ends in five or zero, it is divisible by five. 6 - If the number is divisible by two and three, it is divisible by six. 8 - If the last three digits of the number are divisible by eight, then it is divisible by eight. 9 - If the sum of the number's digits sums to or sums to a product of nine, then it is divisible by 9. 10 - If a number ends in zero, it is divisible by 10.

9797 is the largest prime number less than 100.

In order to be divisible by both 2 and 3, a number must be divisible by 6.The largest multiple of 6 less than 100 is 96 ... the 16th multiple of 6.So there are 16 of them.

112 is less than 150 & is divisible by 8 ( 14 ).

9800 The LCM of 25 & 40 is 200, so need the largest multiple of 200 less than 10000. 10000 ÷ 200 = 50 so 49 x 200 = 9800 is the largest 4 digit number divisible by both 25 and 40.

1377 Nice short cut you may wish to use if a number is divisible by 9 then if you add up all it;s digis you get a number divisible by 9 so in this case 1 + 3 + 7 + 7 = 18 where as the original number 1 + 3 + 8 + 2 = 14 which is not divisiable by 9 Enjoy

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