Tag: math & puzzles

Select odd one out...

Select odd one out...

If f(x) and g(x) are differentiable functions such that f '(x) = 3 x and g '(x) = 2 x^2 then the limit lim [(f(x) + g(x)) - (f(1) + g(1))] / (x - 1) as x approaches 1 is equal to

Select odd one out...

Select odd one out...

A number is given as 987562153ab where a and b are digits. Which values of a and b, such that a + b = 11 and a < b, would result in 987562153ab being divisible by 4?

What is the sum of the reciprocals of the solutions to the equation x2 - (3/5)x = -11/3

If n is a positive integer such that n! / (n - 2)! = 342, find n

If a and b are both even numbers, which of the following could be and odd integer?

For what value of k will the two equations 2x + 4 = 4(x - 2) and -x + k = 2x - 1 have the same solution?