Yes
61 86-36=50 50/2=25 thus 25+36=61 86-25=61
86 is composite, because it has factors other than 1 and itself. The factors of 86 are 1, 2, 43, and 86. All even numbers greater than 2 are composite.
134 can be expressed in different ways depending on the context. In mathematics, 134 is an integer, specifically a natural number greater than 133 and less than 135. In computing, 134 can be represented in binary as 10000110, in octal as 206, and in hexadecimal as 86. In chemistry, 134 can refer to the atomic number of an element on the periodic table.
9 tens = 90. 4 fewer ones than tens = 9 - 4 = 5. Therefore the answer is 95.
100