it is composite.
it is the 12th triangular number.
it is the 56th composite number.
it is the product of the first even number and the 25th composite number.
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Yes, 78 is a whole number.
78 is an even number as it can be divided by 2!
x = number Four times the number (4x) is the same as the number increased by 78 (x + 78). Since they are both equal, then 4x = x + 78 4x - x = 78 3x = 78 x = 26
No because 78 times 78 doesnt equal 78
78 is.