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How many integers are between 25 and 45 are even?

A and B are 3 years 2 years old respectively. their father is 40 years old. After how many years, father age would be the twice of combined age of A and B?

At an international conference, 100 delegates spoke English, 40 spoke French, and 20 spoke both English and French. How many delegates could speak at least one of these two languages?

A father is three times as old as his son. After fifteen years the father will be twice as old as his son`s age at that time. Hence the father`s present age is

The sum of 3 single digit numbers is 15 less than their product. If we subtract 2 from first given number, then sum of these numbers will become 7 more than their product. The product of given 3 numbers will be?

A solid cube of side 12 cm has been painted red, blue and black on pairs of opposite faces. It is then cut into cubical blocks of each side 2 cm. How many cubes have no face painted?

Three runners A, B and C run a race, with runner A finishing 12 meters ahead of runner B and 18 meters ahead of runner C, while runner B finishes 8 meters ahead of runner C. Each runner travels the entire distance at a constant speed. What was the length of the race?

If x(a) = $a^2$ + 2a - 1, then x (8)-x (5) =?

Every pupil in a school was given one ticket for a concert. The school was charged a total of Rs.6000 for these tickets, all of which were of equal value. What was the price of one ticket? If the price of each ticket had been one dollar less, the total cost would have been 1,200 less. If the price of each ticket had been Rs.2 more, the total bill would have increased by 40%.