How many different 5 card hands can be dealt from as standard deck of 52 playing cards?

Un dreptunghi are perimetrul 420m. Lungimea este de 4ori mai mare decât latimea. Aflati lungimea si latimea dreptunghiului?

If you double the sum of 5 and the number you will get 16

Train B travels 140 miles which is 40% of the total distance it will travel. What is the total number of miles train B will travel?

On a string of red and blue lights, the red lights blink everyb3 seconds, and the blue lights blink every 5 seconds. How many times will they blink at the same time in one minute?

18, - 82, - 182, - 282,