2, 4, 6, 8, 10, ... What number should come next?

544, 509, 474, 439, ... What number should come next?

What will come at the place of question mark ?<br><sup>2</sup>/<sub>3</sub> , <sup>4…

What will come at the place of question mark ?<br>113, 225, 449, ? , 1793

Which term of the series 5,10, 20, 40,...................is 1280 ?

Find the missing term: 1, 1, 2, 6, 24, ?, 720

9, 12, 11, 14, 13, 16, 15, ... choose which pair of numbers comes next?

Find the missing term: 48, 24, 96, 48, 192, ?

In the series 3, 9, 15,.............what will be the 21st term?