If GARDEN is coded as 325764 and WATER as 92165, how can we code the word WARDEN in the same way?

Find the odd man out

A certain code 564 means all the best, 736 means best of luck and 423 means all is luck. Which of the following is the code for luck?

Identify the next number in the following series: 2, 8, 26, 62, 122, 212, _______

Find the missing number in the given series: 4, 18 ______, 100, 180, 294, 448

Find the odd man out from the following: 445, 221, 109, 46, 25, 11, 4

Find out the next number in the following series $\displaystyle 7, 11, 13, 17, 19, 23, 25, 29$?