Riddle: How many combinations of two digit numbers having 2 can be made from the following numbers? 7, 8, 9, 4, 2.
Answer: Answer : 9. Explanation : The possibe two digit numbers that can be made are: 72, 82, 92, 42, 22, 24, 29, 27, 28. These altogether are 9 in number.
Riddle: I am a word. My first four letters refer to a mark on a person's skin; three letters found in the middle refer to what all mathematics students know. My last four letters refer to a place where everyone love to be, and my whole is familiar to all economics students. I am an eight letter word. What am I?
Riddle: What five digit number has its last digit half its third digit; its first and fourth digits is the product of its second and third digits and its second and fourth digits are equal?
Riddle: I'm an object; good at drawing. I draws without using any drawing instrument, yet I can draw even better and faster than the world's best artist. But what I will draw won't stay permanent and what I draws may see me or not. What am I?
Answer: A mirror. Humans can see it but objects cannot.