Directions(36-40) : What value comes in place of the question mark (?) in the following series?
33, 1089, 1617, ?, 2013, 2079
1881
1789
1932
1806
None of these
Solution
$33 + 1056 = 1089$
$1089 + \dfrac{1}{2} \times 1056 = 1089 + 528 = 1617$
$1617 + \dfrac{1}{2} \times 528 = 1617 + 264$ = 1881
$1881 + \dfrac{1}{2} 264 = 1881 + 132 = 2013$
$2013 + \dfrac{1}{2} \times 132 = 2013 + 66 = 2079$