45 57 81 117 165 ?

5, 45, 83, 117, 145, ?

In a class of 15 students, 4 students failed and those who passed had marks 38, 45, 63, 35, 81, 99, 78, 57, 92, 39, 48. Find the median marks of the class.

17, 18, 38, 117, ?, 2365

Reduce the following fractions into their lowest terms : (i) 36/60 " (ii) " 135/81" (iii) " 117/26

Select the option that is related to the third number in the same way as the second number is related to the first number. 39 : 117 :: 45 : ?

Four of the following five are alike in a certain way and so form a group. Which is the one that does not belong to that group? 1) 39 2) 69 3) 57 4) 129 5) 117

Find x for which the number are in proportion. a. 45, 81, x, 99 b. 66, x, 72,132