√289 + √49 + 121

71, 79, 88, 152, ?, 393

What will come in place of the question mark (?) in the following series?

102, 111, 136, 185, 266, ?

What will come in place of the question mark (?) in the following series?

20, ?, 30, 60, 150, 450

3      2       10      ?      17     16

?, 15, 45, 225, 1575, 14175

What value should come in the place of (?) in the following number series?

14, 18, ?, 43, 68, 104

What will come in place of the question mark (?) in the following series?

1458, ?, 162, 54, 18, 6

7, 176, ?, 378, 427, 452

What will come in place of the question mark (?) in the following series?

1515, 184, ?, 455, 967, 624

24   12   18   ?   157.5   708.75   3,898.125