Most Asked Number System Multiple Choice Questions 1) Every rational number is a - Whole number Real number Natural number None of the above Answer: (b) Real number Explanation: The numbers which can be found on the number line and include both rational and irrational numbers are known as real numbers, e.g., -1.5,√2,0,1,2,3,π.Almost any number which you can imagine is a real number. 2) Between any two numbers, there are - Two rational numbers No rational number Infinite rational numbers None of the above Answer: (c) Infinite rational numbers Explanation: There are infinite rational numbers in between any two numbers. 3) What will be the value of x3 + y3 + z3, if x + y + z = 0? 3xyz 2xyz xyz xyz(xy + yz + zx) Answer: (a) 3xyz Explanation: It is given that x + y + z = 0 On cubing both sides, we will get (x + y + z)3 = 0 x3 + y3 + z3 - 3xyz = 0 So, the value of x3 + y3 + z3 = 3xyz 4) Digit 1 is occurring 136 times on writing all of the page numbers of a book. What will be...
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