If the mathematical operations are changed in such a way that 10+5-3x4=11, 15+3-5x10=50, then find the value of 20+10-6x3=................?
The sequence below contains terms that doesn't have any perfect square factors (except 1). 2, 3, 5, 6, 7, 10, 11, 13, 14, 15...
What is the sum of the square-roots of the terms starting from 2 to the largest two-digit term?
Calculate the number of ordered triples (A1, A2, A3) such that:
A1 ∪ A2 ∪ A3 = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} A1 ∩ A2 ∩ A3 = ∅
Write your answer as 2a3b5c7d where a, b, c, d are non-negative integers.
