Question
13Â Â Â Â 13Â Â Â Â Â Â 26 Â Â Â Â Â Â ?Â
     832       13312 What should come in place of question mark ‘?’ in the following number series?Solution
13 × 1 = 13 13 × 2 = 26 26 × 4 = 104 104 × 8 = 832 832 × 16 = 13312
31, 60, 118, 234, 466, ?
11    16    42    141    ?   2945   17700
...8, 27, 53, ?, 161, 285
Find the missing number in the given number series.
8, 13, ?, 23, 28, 33
What will come in place of the question mark (?) in the following series?
7, 19, 55, 163, 487, ?
14, 17, 23, 32, ?, 59
What will come in the place of questions (?) mark in the following questions.
1204, 1218, ? , 1267, 1302, 1344
15.5, 62, 186, ?, 2232, 8928
17 , 37 , 79 , 165 , ? , 689
14.8% of 7200 – 16.4% of 6200 + 15.09% of 8100 = 10% of ?