It has more than 2 factors; 1, 29, and 87. 29x3=87. Therefore, it is composite.
It is: 87-34+12 = 65
(87*96)+45=8397
87 is a composite number because it has more than two factors
696 / 8 = 87 = 8 * 87 = 696
It is: 87+316 = 403
7/8 = 0.875 0.87
Sum of the digits of 87 = 8+7 =15(a multiple of 3) which means that 87 is divisible by 3. Therefore, 87 is not a prime number as it has more than two factors which are 1, 87, 3 etc. In order to prove that a given number is prime we shall show that the given number has more than two factors. There is no need to find all the factors.
It has more than 2 factors; 1, 29, and 87. 29x3=87. Therefore, it is composite.
It is: 87-34+12 = 65
(87*96)+45=8397
87 is a composite number because it has more than two factors
It has more than two factors.
87
8 x 87 = 696
I believe the answer is 89
696 / 8 = 87 = 8 * 87 = 696