5000 Difficult Numbrex Puzzles to Improve Your IQ

PERFECT BRAIN FITNESS GIFT FOR MATH & NUMBER PUZZLE LOVERS Solving NUMBREX puzzles guarantees to put your brain in top operating condition. NUMBREX puzzles challenge your mind in two ways. First translate the result of an addition, subtraction, multiplication, or division to decimal from binary, hexadecimal, or roman numeral number formats. Second, calculate the missing second operand in the arithmetic operation. NUMBREX & SOLUTION 2952.53 - ____=100002953.7 * ____=LXXXIV2954.12