Which of the following fractions has the highest value 3/5, 4/3, 2/5, 1/2

Directions: Select the appropriate number to fill in the blank in the series. 100, 50, 33.33, _____, 20

Four gardeners with 4 grass mowers mow 400 square metres of ground in four hours. How long would it take for 8 gardeners with 8 grass mowers to mow 800 square metres of ground?

Directions: Select the appropriate number to fill in the blank in the series. 3, 9, _____, 6561

Directions: Select one of the given numbers to replace the question mark in the series. 2, 3, 4, 6, 7, 8, 9, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, ?

Y travels 15 kilometres due South, then 5 kilometres due west, then 18 kilometres due north, then 3 kilometres due south, then 5 kilometres due East. How far is he from the starting point?

Directions: Select one of the given numbers to replace the question mark in the series. 117, 104, 91, 78,?

6×3 (3-1) is equal to:

Directions: Select one of the given numbers to replace the question mark in the series. 88, 96, 104,?