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A right-angled triangle has hypotenuse 13 m, and its other two sides differ by 7 m. Find those two s

A father is 42 and his son is 16. How many years ago was the product of their ages 272? Try it befor

The digits of a two-digit number multiply to 18, and adding 27 reverses them. What is the number? Tr

Two brothers' ages add up to 34 and multiply to 288. How old is each brother? Try it before the time

The product of two consecutive positive even numbers is 24. What are the numbers? Try it before the

When 11 is subtracted from the square of a positive integer, the result is 38. What is the number? T

The sum of two positive numbers is 18 and their product is 77. What are the numbers? Try it before t

Solve x squared minus 5x plus 6 = 0 using the quadratic formula. What is the larger root? Try it bef

Solve the quadratic equation x squared minus 10x plus 16 = 0. What is the larger root? Try it before

In a geometric series the third term is 27 and the sixth term is 729. What is the sum of the first 1

A geometric series has first term 7, last term 448 and sum 889. What is the common ratio? Try it bef

How many terms are in the geometric series 3 + 6 + 12 + 24 + ... + 768? Try it before the timer runs

What is the sum of the first 5 terms of the geometric series 1 + 3 + 9 + 27 + ...? Try it before the

Three geometric means are inserted between 5 and 405. What is the largest of those means? Try it bef

2, g and 32 are in geometric sequence. What is the geometric mean g? Try it before the timer runs ou

A salary of Rs. 40,000 per month rises by a grade of Rs. 1,000 every year. What is the total income

In an arithmetic series the third term is 0 and the tenth term is 42. What is the sum of the first 1

An arithmetic series has first term 2, last term 29 and sum 155. How many terms are there? Try it be

What is the sum of the first 28 terms of the series 5 + 17 + 29 + ...? Try it before the timer runs

What is the sum of the first 13 terms of the series 2 + 4 + 6 + ...? Try it before the timer runs ou

What is the sum of the first 20 terms of the series 1 + 2 + 3 + ...? Try it before the timer runs ou

Seven arithmetic means are inserted between 3 and 43. What is the middle one? Try it before the time

Three arithmetic means are inserted between 3 and 23. What is the largest of those means? Try it bef

7, m and 17 are in arithmetic sequence. What is the arithmetic mean m? Try it before the timer runs