A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

I am an odd number. Take away a letter and I become even. What number am I?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

Using mathematical symbols like +, -, and x in order to make the equations correct. Replace # with the above-given symbols.

9 # 8 # 7 # 6 # 5 # 4 = 91