Which of the f ollowing numbers will replace the question mark (?) in the given series?
 15, 27, 12, ?, 9, 33

Select the number from among the given options that can replace the question mark (?) in the following series.
 34, 102, 612, 5508, ? 

The value of $$3{2\over7}+14{4\over9}+5{3\over9}$$ is:

Identify the number that does NOT belong to the following series. 

49, 98, 196, 394, 784, 1568

What is the value of [ 7÷ 14 x 8 + (5 ÷ 15 x 6 - 4 × 3)]?

If 16 : X :: X: 196, find the positive value of x?

Find the value of p, when p= ( 5÷ 6 ) of 54 - 40 + 10 - 41 - 22

Select the number from among the given options that can replace the question mark (?) in the following series.
728, 717, 695, 662, 618, ?