Four terms are in proportion. The first, second and fourth terms are 4, 22, and 33. Find the third term.

6    16   ?      244   1,245   7,506   52,591

Find the missing term.

D – 4, F – 6, H – 8, J – 10, ?, ?

10 59 ? 1169 3503 7001

7       7       14       42      ?     840

84, 61, 80, 57, 76, ?

94, 563, 2813, ? 33743, 67481

64      66      70      73      ?      86

Study the given pattern carefully and select the number that can replace the question mark (?) in it.

4 7 6

15 ? 21

44 68 60

There are 3 series, you have to find value of a, b, c and then establish relation among a,b,c.

19, 25, 45, a, 553, 2767