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Is 138 prime or composite?
Composite since it ends in an even number it will always be divisible by 2
How can you tell that 42 is divisible by 3?
To determine if 42 is divisible by 3, you can add up the digits of 42 (4 + 2 = 6) and check if the sum is divisible by 3. Since 6 is divisible by 3, then 42 is also divisible by 3. This is based on the rule that a number is divisible by 3 if the sum of its digits is divisible by 3.
What is a counter example to falsify If x is an integer divisible by 3 then x2 is an integer divisible by 3?
Suppose x = sqrt(3*a) where a is an integer that is not divisible by 3. then x2 = 3*a which is divisible by 3. but x is not even rational and so is not an integer and is certainly not divisible by 3.
What are the prime factors of 138?
2 x 3 x 23 = 138
Prime factorization of 138?
138 = 2 x 3 x 23
Is 138 divisible by 6?
138 is divisible by 6. Any number is divisible by 6 if it is an even number that also is divisible by 3.
Does 3 go into 138?
Yes. 138 is evenly divisible by three.
Is 138 divisble by 3?
It is, but it is NOT evenly divisible.
Why is 138 divisible by 9?
138 / 9 is equal to 15.33 or 15 with remainder 3.
Why is 138 divisible by 18?
138 is not divisible by 18.
Is 138 divisible by 3?
Yes. The result is 46.
Is 138 prime?
No. 138 is divisible by 2.
Is 138 divisible by 4?
No - 138/4 = 34.5
What even number between 132 and 156 is divisible by 3 but not by 12 or 10?
138
Is 138 divisible by 9?
No.
Is 276 divisible by 3 and 4?
Yes. 276 is divisible by these numbers: 1 2 3 4 6 12 23 46 69 92 138 and 276.
Is 414 equally divisible by 3?
I think the question is mistyped, and should be "Is 414 evenly divisible by 3?" i.e. does it divide by 3 without leaving a remainder. The answer is yes. A quick way to tell if a number is divisible by 3 is to add the digits and if the total is divisible by 3, then the number in question is also divisible by 3 4 + 1 + 4 = 9 and 9 is divisible by 3 414 ÷ 3 = 138
