· A, B, C, D, E, F and G are born in seven different years namely 1973, 1976, 1985, 1992, 1996, 2004 and 2009, but not necessarily in the same order. NOTE: Consider the base year as 2023 for the calculation of the age of each person.
| Year | Age (Base year as 2023) | Person |
| 1973 | 50 | |
| 1976 | 47 | |
| 1985 | 38 | |
| 1992 | 31 | |
| 1996 | 27 | |
| 2004 | 19 | |
| 2009 | 14 | |
· G is born in an odd-numbered year before 1992.
· Two people are born between G and F.
· So, there are two cases possible i.e., Case 1 and Case 2.
| Year | Age (Base year as 2023) | Person (Case 1) | Person (Case 2) |
| 1973 | 50 | | G |
| 1976 | 47 | | |
| 1985 | 38 | G | |
| 1992 | 31 | | F |
| 1996 | 27 | | |
| 2004 | 19 | F | |
| 2009 | 14 | | |
· The difference between the age of F and C is five years.
· D is three years older than E.
· So, Case 2 will be invalid.
| Year | Age (Base year as 2023) | Person (Case 1) | Person (Case 2) (Invalid) |
| 1973 | 50 | D | G |
| 1976 | 47 | E | |
| 1985 | 38 | G | |
| 1992 | 31 | | F |
| 1996 | 27 | | |
| 2004 | 19 | F | |
| 2009 | 14 | C | |
· A is older than B but younger than G.
| Year | Age (Base year as 2023) | Person (Case 1) |
| 1973 | 50 | D |
| 1976 | 47 | E |
| 1985 | 38 | G |
| 1992 | 31 | A |
| 1996 | 27 | B |
| 2004 | 19 | F |
| 2009 | 14 | C |
Finally, we get,
| Year | Age (Base year as 2023) | Person (Case 1) |
| 1973 | 50 | D |
| 1976 | 47 | E |
| 1985 | 38 | G |
| 1992 | 31 | A |
| 1996 | 27 | B |
| 2004 | 19 | F |
| 2009 | 14 | C |
The sum of the age of G and F is 57 years.
Study Notes
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