The ratio of the present age of P and Q is 2: 3. The ratio of their age after 18 years will be 4: 5. What is the present age of Q?

Direction (66-70): What should come in place of the question mark(?) in the following number series?

4    6    14    44  ?   892

If a + b + c = 0, then a³+b³+c³ is equal to 

 ₹ 800 becomes ₹ 956 in 3 years at a certain rate of simple interest. If the rate of interest is increased by 4 %, what amount will ₹ 800 become in 3 years? 

Find the greatest number which will exactly divide 200 and 320. 

What approximate value should come in place of the question mark (?) in the following question? 
21.9714 × (8.8749 - 4.9393) = ?

The greatest number that divides 411, 684, 821 and leaves 3, 4 and 5 as remainders, respectively, is